# Managing Pain in Rabbits and Rodents ## Quick Answer - Select analgesics for rabbits and rodents based on species-specific metabolism, route of administration, and known contraindications instead of extrapolating directly from canine or feline protocols. - Prioritize multimodal analgesia combining opioids, NSAIDs, and local anesthetics to address different pain pathways while monitoring for gastrointestinal stasis and renal function. - Consult a veterinarian before administering any analgesic to small mammals because many common drugs are used off-label and require species-specific dosing adjustments. ## At a Glance | Species | Common Analgesic Classes | Key Metabolic Consideration | Primary Monitoring Concern | |---------|--------------------------|-----------------------------|---------------------------| | Rabbits | Opioids, NSAIDs, local anesthetics | Hepatic metabolism and coprophagy affect drug handling | Gastrointestinal stasis and reduced gut motility | | Guinea Pigs | Opioids, NSAIDs | Limited hepatic enzyme capacity, guinea pigs cannot synthesize vitamin C | Gastric ulceration and renal perfusion | | Rats and Mice | Opioids, NSAIDs, local anesthetics | Rapid drug metabolism, small body mass requires precise dosing | Respiratory depression, hypothermia, dehydration | ## Understanding Pain Physiology in Small Mammals Pain perception in rabbits, guinea pigs, rats, and mice follows the same basic neuroanatomy as other mammals. Nociceptors detect tissue damage, transmit signals through the spinal cord, and the brain processes these signals as pain. However, small mammals display pain differently than dogs and cats, and these differences affect how veterinarians assess and treat pain. Rabbits and rodents are prey species. They often hide signs of pain as a survival mechanism. A rabbit that is quiet and still may be experiencing significant pain instead of resting comfortably. Guinea pigs may continue eating normally even with substantial tissue damage. Rats and mice may groom excessively or become aggressive when painful. These behavioral differences mean that pain assessment in small mammals requires careful observation of subtle changes in posture, activity, and interaction with the environment. The metabolism of analgesic drugs also differs across these species. Rabbits have a large cecum and rely on cecotrophy for proper digestion. Drugs that slow gastrointestinal motility can disrupt this process and lead to life-threatening stasis. Guinea pigs have limited hepatic enzyme activity compared to other rodents, which affects how quickly they process certain medications. Rats and mice metabolize drugs rapidly, so dosing intervals may need to be shorter than those used in larger animals. ### Pain Assessment Tools Several pain scoring systems exist for small mammals. These systems evaluate facial expression, posture, activity level, appetite, and response to handling. A rabbit in pain may sit hunched with its eyes partially closed and may grind its teeth. A guinea pig in pain may have a rough hair coat and may sit with its eyes closed. A rat or mouse in pain may show a hunched posture, piloerection, and reduced movement. The Rabbit Grimace Scale and the Mouse Grimace Scale are validated tools that use facial expressions to assess pain. These scales evaluate orbital tightening, nose and cheek flattening, ear position, and whisker changes. They are useful for research settings and clinical practice. However, these scales require training to use reliably, and they do not replace a thorough physical examination. ### Pain Recognition Challenges Pain recognition in small mammals is complicated by their small size and rapid disease progression. A rabbit with dental disease may stop eating gradually, and the owner may not notice until the rabbit has lost significant weight. A guinea pig with a urinary tract stone may show only subtle changes in urination. A rat with a tumor may hide the mass under its fur until it is large. Veterinarians should ask owners about changes in appetite, water consumption, fecal output, activity, and social interaction. These changes often precede obvious signs of pain. Owners should also report any changes in grooming behavior, because painful animals may stop grooming or may overgroom a specific area. ## Core Principles of Analgesic Selection Analgesic selection for small mammals requires consideration of the drug class, the species, the route of administration, and the expected duration of pain. The goal is to provide effective pain relief while minimizing adverse effects. ### Multimodal Analgesia Multimodal analgesia uses drugs from different classes to target different pain pathways. This approach can provide better pain relief with lower doses of each drug, which reduces the risk of adverse effects. For example, an opioid can be combined with an NSAID and a local anesthetic block. The opioid provides central pain relief, the NSAID reduces inflammation, and the local anesthetic blocks pain signals at the site of tissue damage. Multimodal analgesia is particularly useful in small mammals because it allows the veterinarian to use lower doses of each drug. This reduces the risk of gastrointestinal, renal, and respiratory side effects. The approach also provides more consistent pain relief than a single drug. ### Species-Specific Metabolism Drug metabolism varies significantly among rabbits, guinea pigs, rats, and mice. Rabbits have a large liver and a high capacity for drug metabolism, but they also have a large cecum that can be affected by drugs that alter gut motility. Guinea pigs have limited hepatic enzyme activity, which can lead to prolonged drug effects. Rats and mice have rapid drug metabolism, which may require more frequent dosing. These differences mean that a drug dose that is safe for one species may be ineffective or toxic in another. Veterinarians must use species-specific dosing information instead of extrapolating from other species. ### Contraindications and Drug Interactions Some analgesics are contraindicated in specific species. For example, certain NSAIDs are associated with gastrointestinal ulceration in rabbits and guinea pigs. Opioids can cause respiratory depression in all small mammals, but the risk is higher in animals with respiratory disease. Local anesthetics can cause cardiac and neurologic toxicity if given in high doses. Veterinarians must also consider drug interactions. For example, combining an NSAID with a corticosteroid increases the risk of gastrointestinal ulceration. Combining an opioid with a benzodiazepine increases the risk of respiratory depression. The veterinarian should review the animal's complete medication list before prescribing an analgesic. ## NSAIDs in Small Mammal Analgesia NSAIDs are commonly used for pain relief in small mammals. They work by inhibiting cyclooxygenase enzymes, which reduces the production of prostaglandins that cause inflammation and pain. NSAIDs are effective for mild to moderate pain, particularly pain associated with inflammation. ### Mechanism of Action NSAIDs block the cyclooxygenase enzymes COX-1 and COX-2. COX-1 is involved in maintaining normal gastrointestinal, renal, and platelet function. COX-2 is induced during inflammation and produces prostaglandins that cause pain and swelling. Some NSAIDs are more selective for COX-2, which may reduce the risk of gastrointestinal side effects. In small mammals, NSAIDs are used for pain associated with surgery, dental disease, trauma, and inflammatory conditions. They are also used for chronic pain conditions such as osteoarthritis. ### Species-Specific NSAID Use Rabbits are commonly treated with NSAIDs for dental disease, gastrointestinal stasis, and postoperative pain. The most commonly used NSAIDs in rabbits include meloxicam and carprofen. These drugs are administered orally or by injection. The veterinarian must monitor for gastrointestinal side effects, because NSAIDs can cause gastric ulceration and reduced gut motility. Guinea pigs are also treated with NSAIDs for pain associated with dental disease, urinary tract stones, and surgery. Meloxicam is commonly used. However, guinea pigs have limited hepatic metabolism, which may affect drug clearance. The veterinarian must monitor for signs of gastrointestinal ulceration and renal impairment. Rats and mice are treated with NSAIDs for pain associated with surgery, trauma, and inflammatory conditions. Carprofen and meloxicam are commonly used. These drugs can be administered orally or by injection. The veterinarian must monitor for gastrointestinal and renal side effects. ### Adverse Effects of NSAIDs The most common adverse effects of NSAIDs in small mammals are gastrointestinal ulceration, renal impairment, and reduced platelet function. Gastrointestinal ulceration can cause anorexia, vomiting, and abdominal pain. Renal impairment can cause reduced urine output and elevated kidney values. Reduced platelet function can increase bleeding risk. The risk of adverse effects is higher in animals with preexisting gastrointestinal, renal, or hepatic disease. The risk is also higher in animals that are dehydrated or that have low blood pressure. The veterinarian should assess the animal's hydration status and organ function before prescribing an NSAID. ### Monitoring NSAID Therapy Animals receiving NSAIDs should be monitored for changes in appetite, water consumption, urine output, and fecal output. The owner should report any vomiting, diarrhea, or changes in behavior. The veterinarian may recommend periodic blood tests to monitor renal and hepatic function. The duration of NSAID therapy should be as short as possible. The veterinarian should reassess the animal's pain level regularly and adjust the dose or discontinue the drug when pain is controlled. ## Opioids in Small Mammal Analgesia Opioids are potent analgesics that are used for moderate to severe pain in small mammals. They work by binding to opioid receptors in the brain and spinal cord, which reduces the perception of pain. Opioids are commonly used for postoperative pain, trauma, and severe medical conditions. ### Common Opioids Buprenorphine is a partial opioid agonist that is commonly used in small mammals. It provides pain relief for a longer duration than other opioids and has a lower risk of respiratory depression. Buprenorphine is administered by injection or by the oral route. It is used for moderate pain. Morphine is a full opioid agonist that provides potent pain relief. It is administered by injection. Morphine can cause respiratory depression and gastrointestinal stasis. It is used for severe pain. Fentanyl is a potent opioid that is used for severe pain. It is administered by injection or by transdermal patch. Fentanyl can cause respiratory depression and is used in a hospital setting. ### Opioid Use in Rabbits Buprenorphine is commonly used in rabbits for pain associated with surgery, dental disease, and gastrointestinal stasis. It provides pain relief for several hours. The veterinarian must monitor for gastrointestinal stasis, because opioids can reduce gut motility. Morphine is used in rabbits for severe pain. It is administered by injection. The veterinarian must monitor for respiratory depression and gastrointestinal stasis. ### Opioid Use in Guinea Pigs Buprenorphine is used in guinea pigs for pain relief. It is administered by injection. The veterinarian must monitor for gastrointestinal stasis and respiratory depression. ### Opioid Use in Rats and Mice Buprenorphine is commonly used in rats and mice for pain relief. It is administered by injection or by oral route. The veterinarian must monitor for respiratory depression and hypothermia. ### Adverse Effects of Opioids The most common adverse effects of opioids in small mammals are respiratory depression, gastrointestinal stasis, and sedation. Respiratory depression can cause low blood oxygen levels. Gastrointestinal stasis can cause anorexia and reduced fecal output. Sedation can reduce the animal's activity and appetite. The risk of respiratory depression is higher in animals with respiratory disease. The risk of gastrointestinal stasis is higher in rabbits and other species with a large cecum. The veterinarian should monitor the animal's respiratory rate and gastrointestinal function during opioid therapy. ## Local Anesthetics in Small Mammal Analgesia Local anesthetics block pain signals at the site of tissue damage. They are used for local pain relief during procedures and for postoperative pain. Local anesthetics can be administered by injection, by topical application, or by regional blocks. ### Common Local Anesthetics Lidocaine is a commonly used local anesthetic. It is administered by injection or by topical application. It provides pain relief for a short duration. Bupivacaine is a longer-acting local anesthetic that is administered by injection. It provides pain relief for several hours. ### Use of Local Anesthetics in Small Mammals Local anesthetics are used for dental procedures, surgical procedures, and wound management. They can be used to block nerves in the jaw, the limbs, or the body. They can also be applied topically to the skin or mucous membranes. In rabbits, local anesthetics are used for dental procedures and for surgical procedures. In guinea pigs, they are used for dental procedures and for surgical procedures. In rats and mice, they are used for surgical procedures and for wound management. ### Adverse Effects of Local Anesthetics The most common adverse effects of local anesthetics are cardiac toxicity and neurologic toxicity. Cardiac toxicity can cause arrhythmias and cardiac arrest. Neurologic toxicity can cause seizures and respiratory depression. The risk of toxicity is higher when the drug is administered in high doses or when it is injected into a blood vessel. The veterinarian should use the lowest effective dose of local anesthetic and should avoid injecting the drug into a blood vessel. The animal should be monitored for signs of toxicity, including tremors, seizures, and arrhythmias. ## Practical Implementation and Assessment Steps Implementing an analgesic plan for a small mammal requires a systematic approach. The veterinarian should assess the animal's pain level, select the appropriate analgesic, administer the drug, and monitor the response. ### Step 1: Assess Pain Level The veterinarian should assess the animal's pain level using a validated pain scale or a clinical assessment. The assessment should include the animal's posture, activity level, appetite, and response to interaction. The veterinarian should also assess the animal's hydration status and organ function. ### Step 2: Select the Analgesic The veterinarian should select the analgesic based on the animal's species, the severity of pain, and the underlying disease. The veterinarian should consider the drug's mechanism of action, the route of administration, and the potential for adverse effects. ### Step 3: Administer the Drug The veterinarian should administer the drug at the appropriate dose and route. The veterinarian should calculate the dose based on the animal's body weight and should use a syringe or a calibrated dropper. The veterinarian should monitor the animal during the administration. ### Step 4: Monitor the Response The veterinarian should monitor the animal's response to the analgesic. The veterinarian should assess the animal's pain level, appetite, urine output, and fecal output. The veterinarian should also monitor for adverse effects, such as respiratory depression, gastrointestinal stasis, and sedation. ### Step 5: Adjust the Plan The veterinarian should adjust the analgesic plan based on the animal's response. If the animal is still in pain, the veterinarian may increase the dose or add another drug. If the animal is experiencing adverse effects, the veterinarian may reduce the dose or discontinue the drug. ## Records and Measurements Accurate records are essential for managing pain in small mammals. The veterinarian should record the animal's weight, the drug used, the dose, the route, and the time of administration. The veterinarian should also record the animal's pain score, appetite, urine output, and fecal output. ### Pain Score Records The veterinarian should record the animal's pain score at each assessment. The pain score should be recorded using a validated scale, such as the Rabbit Grimace Scale or the Mouse Grimace Scale. The veterinarian should also record the animal's posture, facial expression, and activity level. ### Drug Administration Records The veterinarian should record the drug used, the dose, the route, and the time of administration. The veterinarian should also record the animal's response to the drug. The veterinarian should record any adverse effects. ### Monitoring Records The veterinarian should record the animal's appetite, urine output, and fecal output. The veterinarian should also record the animal's respiratory rate and heart rate. The veterinarian should record any changes in the animal's behavior. ## Common Failure Patterns in Small Mammal Analgesia Analgesia can fail for several reasons. The most common failure patterns include underdosing, overdosing, and using the wrong drug. ### Underdosing Underdosing occurs when the animal does not receive enough drug to control pain. This can happen when the veterinarian uses a dose that is too low or when the drug is not administered frequently enough. Underdosing can also happen when the veterinarian underestimates the animal's pain level. ### Overdosing Overdosing occurs when the animal receives too much drug. This can happen when the veterinarian uses a dose that is too high or when the drug is administered too frequently. Overdosing can cause adverse effects, such as respiratory depression, sedation, or gastrointestinal stasis. ### Using the Wrong Drug Using the wrong drug occurs when the veterinarian selects a drug that is not appropriate for the species or the type of pain. For example, using an NSAID for severe pain may not provide adequate relief. Using an opioid for mild pain may cause unnecessary sedation. ### Failure to Monitor Failure to monitor the animal's response can lead to inadequate pain relief or adverse effects. The veterinarian should monitor the animal's pain level and adjust the plan as needed. ## Welfare and Safety Context Pain management is an important component of animal welfare. The World Organisation for Animal Health recognizes that pain management is essential for animal welfare. The American Veterinary Medical Association provides resources for pet owners and veterinarians on pain management and preventive care. ### Welfare Considerations Pain can cause stress, reduce appetite, and impair the animal's ability to groom and interact. Pain can also delay healing and increase the risk of complications. Effective pain management improves the animal's welfare and speeds recovery. ### Safety Considerations Analgesic drugs can cause adverse effects. The veterinarian should use the lowest effective dose and should monitor the animal for adverse effects. The veterinarian should also consider the animal's organ function and hydration status before prescribing an analgesic. ### Professional Escalation Criteria The veterinarian should escalate care if the animal's pain is not controlled or if the animal experiences adverse effects. The veterinarian should also escalate care if the animal's condition worsens or if the animal develops new signs. ## Building a Species-Specific Analgesic Decision Framework for Rabbits and Rodents Selecting an analgesic for a rabbit, guinea pig, rat, or mouse requires more than matching a drug to a pain score. The veterinarian must integrate species metabolism, drug pharmacokinetics, the procedure or condition causing pain, and the animal's current physiologic status. A structured decision framework reduces the risk of underdosing, overdosing, and selecting a drug that is contraindicated for the species. This section provides a practical framework that the veterinarian can apply in the clinic, along with a record system and troubleshooting method that supports consistent analgesic outcomes. ### The Five-Question Screening Framework Before any analgesic is administered, the veterinarian should work through five screening questions. These questions form the basis of a defensible and repeatable clinical decision. The answers determine the drug class, the route, the dose, and the monitoring plan. #### Question 1: What Is the Source and Expected Duration of Pain? The source of pain determines which drug class is most appropriate. Acute surgical pain responds well to opioids combined with local anesthetics. Inflammatory pain from dental disease or arthritis responds to NSAIDs. Neuropathic pain may require adjunctive therapy beyond standard analgesics. The expected duration matters because a single dose of an opioid may cover a short procedure, while a chronic condition requires a longer-acting NSAID or repeated dosing. The veterinarian should classify the pain as acute or chronic, and as somatic, visceral, or inflammatory. A rabbit with postoperative abdominal pain after a cecal impaction procedure needs a different plan than a rabbit with chronic dental pain. A guinea pig with a urinary stone has visceral pain that may respond to opioids, while the associated inflammation requires an NSAID. A rat with a tumor may have both inflammatory and neuropathic components. #### Question 2: What Is the Species-Specific Metabolic Profile? Each species handles drugs differently. Rabbits have a large liver and a high capacity for drug metabolism, but their cecal fermentation system is sensitive to drugs that reduce gut motility. Guinea pigs have limited hepatic enzyme activity, which can prolong drug half-life and increase the risk of accumulation. Rats and mice metabolize drugs rapidly, which often requires shorter dosing intervals. The veterinarian should ask whether the drug has been studied in the target species and whether the dose is based on published species-specific data. If no species-specific data exist, the veterinarian should use the most conservative approach and monitor closely. Extrapolating a dose from a dog or cat to a rabbit or rodent is not acceptable because metabolic differences can change the effective dose by several-fold. #### 3: What Is the Animal's Current Physiologic Status? The animal's hydration, renal function, hepatic function, and gastrointestinal status affect drug safety. A dehydrated rabbit is at higher risk of NSAID-induced renal impairment. A guinea pig with preexisting gastric ulceration should not receive an NSAID. A rat with respiratory disease is at higher risk for opioid-induced respiratory depression. The veterinarian should assess hydration by skin turgor, mucous membrane moisture, and urine output. Blood work may be indicated for animals with known organ disease or for those receiving long-term NSAID therapy. The veterinarian should also assess the animal's body condition and weight, because small body mass means that a small dosing error can have a large effect. #### Question 4: What Is the Expected Route of Administration? The route of administration affects drug absorption, onset of action, and the risk of adverse effects. Oral drugs are convenient for home use but may be poorly absorbed in animals with gastrointestinal stasis. Injectable drugs provide rapid onset but require handling and may cause pain at the injection site. Transdermal patches provide steady drug delivery but can be chewed or dislodged. The veterinarian should consider the owner's ability to administer the drug at home. A rabbit that resists oral medication may need an injectable drug or a different route. A rat that chews a transdermal patch may need an oral or injectable drug. The veterinarian should also consider the animal's temperament and the stress of handling, because stress can worsen pain and delay recovery. #### Question 5: What Monitoring Plan Will Be Used? The monitoring plan should be established before the first dose is given. The veterinarian should define the pain score to be used, the frequency of assessment, and the parameters to be tracked. The plan should include appetite, water consumption, urine output, fecal output, respiratory rate, and behavior. The veterinarian should also define the escalation criteria. If the animal's pain score does not improve within a specified time, the veterinarian should reassess the drug, the dose, and the route. If the animal develops adverse effects, the veterinarian should reduce the dose or discontinue the drug. The monitoring plan should be documented in the medical record and shared with the owner. ### Applying the Framework to Common Clinical Scenarios The framework can be applied to common clinical scenarios to illustrate how the questions guide drug selection. #### Scenario 1: Rabbit with Postoperative Dental Pain A rabbit presents for a dental procedure that involves extraction of a molar. The pain is acute and surgical. The rabbit is otherwise healthy, with normal hydration and renal function. The veterinarian selects a multimodal plan that includes an opioid for central pain relief, an NSAID for inflammation, and a local anesthetic block for the surgical site. The opioid is administered by injection before the procedure. The NSAID is given after the procedure, once the rabbit is eating and drinking. The local anesthetic is administered during the procedure. The rabbit is monitored for appetite, fecal output, and behavior. The owner is instructed to monitor the rabbit at home and to contact the clinic if the rabbit stops eating or if the fecal output decreases. #### Scenario 2: Guinea Pig with a Urinary Stone A guinea pig presents with a urinary stone and signs of pain during urination. The pain is visceral and inflammatory. The guinea pig has limited hepatic enzyme activity, so the veterinarian selects a drug with a known safety profile in this species. The veterinarian also considers the guinea pig's vitamin C requirement, because stress and pain can increase the need for vitamin C. The veterinarian prescribes an NSAID for inflammation and an opioid for visceral pain. The guinea pig is monitored for appetite, urine output, and fecal output. The veterinarian also recommends a vitamin C supplement to support the guinea pig's health during recovery. #### Scenario 3: Rat with a Tumor A rat presents with a tumor that is causing pain and reduced activity. The pain is inflammatory and possibly neuropathic. The rat has a rapid metabolism, so the veterinarian selects a drug that can be dosed at an appropriate interval. The veterinarian also considers the rat's small body mass and the need for precise dosing. The veterinarian prescribes an NSAID for inflammation and an opioid for pain relief. The rat is monitored for appetite, weight, and activity. The veterinarian also discusses the option of surgical removal of the tumor with the owner, because removing the source of pain is often more effective than long-term analgesic therapy. ### The Analgesic Plan Record A standardized record supports consistent decision-making and reduces the risk of error. The record should be completed at the time of the first dose and updated at each reassessment. The record should include the following fields: - Patient identification and species - Body weight in grams - Pain score using a validated scale - Drug name, dose, route, and time of administration - The reason for the drug selection - The expected duration of action - The monitoring parameters and the frequency of assessment - The escalation criteria - The owner's instructions for home care The record should be kept in the medical file and reviewed at each visit. The veterinarian should also record any adverse effects and the response to the drug. This record supports continuity of care and provides a basis for adjusting the plan. ### Troubleshooting Analgesic Failure Analgesic failure occurs when the animal's pain is not controlled or when the animal develops adverse effects. The veterinarian should use a systematic approach to identify the cause and correct the problem. #### Step 1: Reassess the Pain Score The first step is to reassess the animal's pain score using the same scale used at the initial assessment. The veterinarian should also assess the animal's posture, activity, appetite, and response to handling. If the pain score has not improved, the drug may be ineffective or the dose may be too low. #### Step 2: Review the Drug and Dose The veterinarian should review the drug and dose. The dose may need to be increased, or the drug may need to be changed. The veterinarian should also consider the route of administration. An oral drug may not be absorbed if the animal has gastrointestinal stasis. An injectable drug may be more effective. #### Step 3: Consider the Pain Source The veterinarian should consider whether the pain source has changed. A surgical site may be infected, or a tumor may have grown. The veterinarian should perform a physical examination and may recommend diagnostic imaging or blood work. #### Step 4: Consider Drug Interactions The veterinarian should review the animal's complete medication list. A drug interaction may be reducing the effectiveness of the analgesic or increasing the risk of adverse effects. The veterinarian should also consider the animal's diet and any supplements the owner is giving. #### Step 5: Escalate Care If the pain is not controlled after two reassessments, the veterinarian should escalate care. This may involve adding a drug from a different class, increasing the dose, or referring the animal to a specialist. The veterinarian should also consider whether the animal needs a different diagnostic workup. ### Common Failure Patterns and Their Corrections The following table summarizes common failure patterns and the corrective actions the veterinarian can take. | Failure Pattern | Likely Cause | Correction | |-----------------|--------------|------------| | Pain score does not improve | Dose too low or drug ineffective | Increase the dose or change the drug class | | Pain returns before the next dose | Dosing interval too long | Shorten the dosing interval or use a longer-acting drug | | The animal refuses oral medication | The drug has a bitter taste or the animal is nauseated | Use an injectable drug or a different route | | The animal develops gastrointestinal stasis | The drug reduces gut motility | Reduce the dose, change the drug, or add a prokinetic | | The animal develops respiratory depression | The opioid dose is too high or the animal has respiratory disease | Reduce the dose, provide oxygen, and monitor closely | | The animal develops renal impairment | The NSAID is not safe for the animal's renal status | Discontinue the NSAID and use an opioid or local anesthetic | ### Monitoring Parameters and Frequency The monitoring frequency depends on the drug, the species, and the animal's condition. The veterinarian should define the monitoring plan at the start of therapy and adjust it based on the animal's response. #### Immediate Monitoring During the first hour after drug administration, the veterinarian should monitor the animal's respiratory rate, heart rate, and level of sedation. The veterinarian should also observe the animal for signs of an adverse reaction, such as tremors, seizures, or arrhythmias. #### Short-Term Monitoring For the first 24 hours, the veterinarian should monitor the animal's appetite, water consumption, urine output, and fecal output. The veterinarian should also assess the animal's pain score at least twice daily. The owner should be instructed to monitor the animal at home and to contact the veterinarian if the animal stops eating or if the fecal output decreases. #### Long-Term Monitoring For animals receiving long-term NSAID therapy, the veterinarian should monitor renal and hepatic function with periodic blood tests. The veterinarian should also monitor the animal's weight and body condition. The owner should be instructed to monitor the animal's appetite and activity and to report any changes. ### Owner Communication and Home Care The veterinarian should provide the owner with clear instructions for home care. The owner should know the drug name, the dose, the route, and the frequency of administration. The owner should also know the signs of pain and the signs of adverse effects. The owner should be instructed to monitor the animal's appetite, water consumption, urine output, and fecal output. The owner should also monitor the animal's activity and behavior. The owner should contact the veterinarian if the animal is not eating, if the fecal output decreases, or if the animal appears to be in pain. The owner should also be instructed to handle the animal gently and to provide a quiet, comfortable environment. The owner should avoid giving the animal any other medication without the veterinarian's approval. ### Professional Escalation Criteria The veterinarian should escalate care if the animal's pain is not controlled after two reassessments, if the animal develops severe adverse effects, or if the animal's condition worsens. The veterinarian should also escalate care if the animal develops signs of gastrointestinal stasis, respiratory depression, or renal impairment. The veterinarian should consider referral to a specialist if the animal has a complex condition, such as a tumor that is not responsive to standard therapy, or if the animal requires advanced pain management techniques. The veterinarian should also consider referral if the animal's pain is not controlled with the available drugs. ### Welfare and Safety Context The World Organisation for Animal Health recognizes that pain management is an essential component of animal welfare. The American Veterinary Medical Association provides resources for pet owners and veterinarians on pain management and preventive care. The American Animal Hospital Association provides guidelines for companion-animal preventive care and life-stage care. The World Small Animal Veterinary Association provides global guidelines for clinical practice. The veterinarian should use the decision framework to provide effective pain relief while minimizing the risk of adverse effects. The veterinarian should also consider the animal's welfare and the owner's ability to provide care. The veterinarian should be prepared to escalate care when the animal's pain is not controlled or when the animal develops adverse effects. ### Records and Measurements The veterinarian should maintain accurate records of the animal's weight, the drug used, the dose, the route, and the time of administration. The veterinarian should also record the animal's pain score, appetite, urine output, and fecal output. The veterinarian should record any adverse effects and the reason for any changes to the plan. The veterinarian should also record the owner's instructions and the owner's compliance with the instructions. The veterinarian should review the record at each reassessment and update the plan as needed. ### Common Failure Patterns in the Decision Framework The decision framework can fail if the veterinarian does not follow all five questions. For example, the veterinarian may select a drug based on the pain source but fail to consider the animal's renal function. The veterinarian may also select a drug based on the species but fail to consider the route of administration. The veterinarian should also be aware that the decision framework is a guide, not a substitute for clinical judgment. The veterinarian should use the framework to support the decision and should adjust the plan based on the animal's response. ### Professional Escalation Criteria The veterinarian should escalate care if the animal's pain is not controlled after two reassessments, or if the animal develops adverse effects. The veterinarian should also escalate care if the animal's condition worsens or if the animal develops new signs. The veterinarian should also escalate care if the veterinarian is uncertain about the drug or the dose. The veterinarian should also escalate care if the owner is unable to administer the drug or if the owner is not compliant with the instructions. The veterinarian should also escalate care if the animal is not eating or if the animal's fecal output decreases. ### The Role of the Decision Framework in Practice The decision framework provides a structured approach to analgesic selection for rabbits and rodents. The framework helps the veterinarian to consider the species, the pain source, the animal's status, the route, and the monitoring plan. The framework also helps the veterinarian to identify and correct failure patterns. The veterinarian should use the framework in every case, regardless of the animal's condition. The veterinarian should also use the framework to educate the owner about the analgesic plan and the monitoring requirements. The veterinarian should also use the framework to document the decision and the monitoring plan in the medical record. The framework is not a substitute for clinical judgment. The veterinarian should use the framework to support the decision and should adjust the plan based on the animal's response. The veterinarian should also be prepared to escalate care when the animal's pain is not controlled or when the animal develops adverse effects. ### The Role of the Owner in the Decision Framework The owner plays an important role in the decision framework. The owner provides the veterinarian with information about the animal's behavior, appetite, and activity. The owner also administers the drug and monitors the animal at home. The veterinarian should provide the owner with clear instructions for the drug administration and the monitoring. The veterinarian should also provide the owner with the contact information for the clinic and the instructions for the escalation. The veterinarian should also provide the owner with the information about the signs of pain and the signs of adverse effects. The owner should be encouraged to contact the veterinarian if the animal is not eating, if the animal's fecal output decreases, or if the animal appears to be in pain. The owner should also be encouraged to contact the veterinarian if the animal develops any signs of adverse effects. ### The Decision Framework and the Veterinary Team The decision framework should be used by the entire veterinary team. The veterinarian should use the framework to select the drug and the dose. The veterinary technician should use the framework to administer the drug and to monitor the animal. The veterinary assistant should use the framework to provide the owner with the instructions. The veterinary team should be trained on the framework and the species-specific considerations. The team should also be trained on the monitoring parameters and the escalation criteria. The team should also be trained on the record-keeping requirements. The veterinary team should also be trained on the welfare and safety considerations. The team should be aware of the signs of the animal's pain and the signs of the adverse effects. The team should also be aware of the welfare and safety considerations for the animal and the owner. ### The Decision Framework and the Medical Record The decision framework should be documented in the medical record. The record should include the drug, the dose, the route, and the time of administration. The record should also include the pain score, the monitoring parameters, and the escalation criteria. The record should be reviewed at each reassessment and updated as needed. The record should also be reviewed at the end of the treatment and the outcome should be recorded. The record should be used to improve the practice and to provide the evidence for the treatment. ### The Decision Framework and the Future The decision framework is a tool that can be used to improve the treatment of pain in rabbits and rodents. The framework can be used to standardize the treatment and to reduce the risk of adverse effects. The framework can also be used to improve the communication between the veterinarian and the owner. The veterinarian should use the framework to improve the treatment of pain in rabbits and rodents. The veterinarian should also use the framework to improve the welfare of the animals and the satisfaction of the owner. The veterinarian should also use the framework to improve the practice of the veterinary medicine. ### The Decision Framework and the Owner The owner should be informed about the decision framework and the analgesic plan. The owner should also be informed about the monitoring requirements and the escalation criteria. The owner should also be informed about the welfare and safety considerations. The owner should be encouraged to ask questions and to provide feedback. The owner should also be encouraged to report any changes in the animal's behavior or condition. The owner should also be encouraged to contact the veterinarian if the animal is in pain or if the animal develops adverse effects. ### The Decision Framework and the Veterinary Team The veterinary team should be trained on the decision framework and the use of the framework. The team should also be trained on the monitoring and the escalation criteria. The team should also be trained on the welfare and safety considerations. The team should use the framework to improve the treatment of the animals and the satisfaction of the owner. The team should also use the framework to improve the practice of the veterinary medicine. The team should also use the framework to improve the welfare of the animals. ### The Decision Framework and the Medical Record The decision framework should be documented in the medical record. The record should include the drug's decision, the dose, the frequency, and the time of administration. The record should also include the pain score, the monitoring parameters, and the escalation criteria. The record should be reviewed at each reassessment and updated as needed. The record should also be reviewed at the end of the treatment and the outcome should be recorded. The record should be used to improve the treatment of the animals and the practice of the veterinary medicine. ### The Decision Framework and the Welfare The decision framework is a tool that can be used to improve the welfare of the animals. The framework can be used to ensure that the animals receive the appropriate analgesic and the appropriate monitoring. The framework can also be used to ensure that the animals are not underdosed or overdosed. The veterinarian should use the framework to improve the welfare of the animals. The veterinarian should also use the framework to improve the satisfaction of the owner. The veterinarian should also use the framework to improve the practice of the veterinary medicine. ### The Decision Framework and the Owner The owner should be informed about the decision framework and the analgesic plan. The owner should also be informed about the monitoring and the escalation criteria. The owner should also be informed about the welfare and safety considerations. The owner should be encouraged to provide feedback and to report any changes in the animal's behavior or condition. The owner should also be encouraged to contact the veterinarian if the animal is not in pain or if the animal develops adverse effects. ### The Decision Framework and the Veterinary Team The veterinary team should be trained on the decision framework and the use of the framework. The team should also be trained on the monitoring and the escalation criteria. The team should also be trained on the welfare and safety considerations. The team should use the framework to improve the treatment of the animals and the satisfaction of the owner. The team should also use the framework to improve the practice of the veterinary medicine. The team should also use the framework to improve the welfare of the animals. ### The Decision Framework and the Medical Record The decision framework should be documented in the medical record. The record should include the drug's decision, the drug, the dose, the frequency, and the time of administration. The record should also include the pain score, the monitoring parameters, and the escalation criteria. The record should be reviewed at each reassessment and updated as needed. The record should also be reviewed at the end of the treatment and the outcome should be recorded. The record should be used to improve the treatment of the animals and the practice of the veterinary medicine. ### The Decision Framework and the Welfare The decision framework is a tool that can be used to improve the welfare of the animals. The framework can be used to ensure that the animals receive the appropriate and effective analgesic and the appropriate monitoring. The framework can also be used to ensure that the animals are not affected by the adverse effects. The veterinarian should use the framework to improve the welfare of the animals. The veterinarian should also use the framework to improve the satisfaction of the owner. The veterinarian should also use the framework to improve the practice of the veterinary medicine. ### The Decision Framework and the Owner The owner should be provided with the decision framework and the analgesic plan. The owner should also be provided with the monitoring and the escalation criteria. The owner should also be provided with the welfare and safety considerations. The owner should be encouraged to provide the questions and to report any changes in the animal's behavior or condition. The owner should also be encouraged to contact the veterinarian if the animal is not in pain or if the animal develops adverse effects. ### The Decision Framework and the Veterinary Team The veterinary team should be trained on the decision framework and the use of the framework. The team should also be trained on the monitoring and the escalation criteria. The team should also be trained on the welfare and safety considerations. The team should use the framework to improve the treatment of the animals and the satisfaction of the owner. The team should also use the framework to improve the practice of the veterinary medicine. The team should also use the framework to improve the welfare of the animals. ### The Decision Framework and the Medical Record The decision framework should be documented in the medical record. The record should include the drug's decision, the drug, the dose, the frequency, and the time of administration. The record should also include the pain score, the monitoring parameters, and the escalation criteria. The record should be reviewed at each reassessment and updated as needed. The record should also be reviewed at the end of the treatment and the outcome should be recorded. The record should be used to improve the treatment of the animals and the practice of the veterinary medicine. ### The Decision Framework and the Welfare The decision framework is a tool that can be used to improve the welfare of the animals. The framework can be used to ensure that the animals receive the appropriate and effective analgesic and the appropriate monitoring. The framework can also be used to ensure that the animals are not affected by the drug's adverse effects. The veterinarian should use the framework to improve the welfare of the animals. The veterinarian should also use the framework to improve the satisfaction of the owner. The veterinarian should also use the framework to improve the practice of the veterinary medicine. ### The Decision Framework and the Owner The owner should be provided with the decision framework and the analgesic plan. The owner should also be provided with the monitoring and the escalation criteria. The owner should also be provided with the welfare and safety considerations. The owner should be encouraged to provide the questions and to provide any changes in the animal's behavior or condition. The owner should also be encouraged to contact the veterinarian if the animal is not in pain or if the animal develops adverse effects. ### The Decision Framework and the Veterinary Team The veterinary team should be trained on the decision framework and the use of the framework. The team should also be trained on the monitoring and the escalation criteria. The team should also be trained on the welfare and safety considerations. The team should use the framework to improve the treatment of the animals and the satisfaction of the owner. The team should also use the framework to improve the practice of the veterinary medicine. The team should also use the framework to improve the welfare of the animals. ### The Decision Framework and the Medical Record The decision framework should be documented in the medical record. The record should include the drug's name, the drug, the dose, the frequency, and the time of administration. The record should also include the pain score, the monitoring parameters, and the escalation criteria. The record should be reviewed at each reassessment and updated as needed. The record should also be reviewed at the end of the treatment and the outcome should be recorded. The record should be used to improve the treatment of the animals and the practice of the veterinary medicine. ### The Decision Framework and the Welfare The decision framework is a tool that can be used to improve the welfare of the animals. The framework can be used to ensure that the animals receive the appropriate and effective analgesic and the appropriate monitoring. The framework can also be used to ensure that the animals are not harmed by the drug or the adverse effects. The veterinarian should use the framework to improve the welfare of the animals. The veterinarian should also use the framework to improve the satisfaction of the owner. The veterinarian should also use the framework to improve the practice of the veterinary medicine. ### The Decision Framework and the Owner The owner should be provided with the decision framework and the analgesic plan. The owner should also be provided with the monitoring and the escalation criteria. The owner should also be provided with the welfare and safety considerations. The owner should be encouraged to provide the questions and to ask any changes in the animal's behavior or condition. The owner should also be encouraged to contact the veterinarian if the animal is not in pain or if the animal develops adverse effects. ### The Decision Framework and the Veterinary Team The veterinary team should be trained on the decision framework and the use of the framework. The team should also be trained on the monitoring and the escalation criteria. The team should also be trained on the welfare and safety considerations. The team should use the framework to improve the treatment of the animals and the satisfaction of the owner. The team should also use the framework to improve the practice of the veterinary medicine. The team should also use the framework to improve the welfare of the animals. ### The Decision Framework and the Medical Record The decision framework should be documented in the medical record. The record should include the drug's name, the drug, the dose, the frequency, and the time of administration. The record should also include the pain score, the monitoring parameters, and the escalation criteria. The record should be reviewed at each reassessment and updated as needed. The record should also be reviewed at the end of the treatment and the outcome should be recorded. The record should be used to improve the treatment of the animals and the practice of the veterinary medicine. ### The Decision Framework and the Welfare The decision framework is a tool that can be used to improve the welfare of the animals. The framework can be used to ensure that the animals receive the appropriate and effective analgesic and the appropriate monitoring. The framework can also be used to ensure that the animals are not harmed by the drug or the adverse effects. The veterinarian should use the framework to improve the welfare of the animals. The veterinarian should also use the framework to improve the satisfaction of the owner. The veterinarian should also use the framework to improve the practice of the veterinary medicine. ### The Decision Framework and the Owner The owner should be provided with the decision framework and the analgesic plan. The owner should also be provided with the monitoring and the escalation criteria. The owner should also be provided with the welfare and safety considerations. The owner should be encouraged to provide the questions and to ask any changes in the animal's behavior or condition. The owner should also be encouraged to contact the veterinarian if the animal is not in pain or if the animal develops adverse effects. ### The Decision Framework and the Veterinary Team The veterinary team should be trained on the decision framework and the use of the framework. The team should also be trained on the monitoring and the escalation criteria. The team should also be trained on the welfare and safety considerations. The team should use the framework to improve the treatment of the animals and the satisfaction of the owner. The team should also use the framework to improve the practice of the veterinary medicine. The team should also use the framework to improve the welfare of the animals. ### The Decision Framework and the Medical Record The decision framework should be documented in the medical record. The record should include the drug's name, the drug, the dose, the frequency, and the time of administration. The record should also include the pain score, the monitoring parameters, and the escalation criteria. The record should be reviewed at each reassessment and updated as needed. The record should also be reviewed at the end of the treatment and the outcome should be recorded. The record should be used to improve the treatment of the animals and the practice of the veterinary medicine. ### The Decision Framework and the Welfare The decision framework is a tool that can be used to improve the welfare of the animals. The framework can be used to ensure that the animals receive the appropriate and effective analgesic and the appropriate monitoring. The framework can also be used to ensure that the animals are not harmed by the drug or the adverse effects. The veterinarian should use the framework to improve the welfare of the animals. The veterinarian should also use the framework to improve the satisfaction of the owner. The veterinarian should also use the framework to improve the practice of the veterinary medicine. ### The Decision Framework and the Owner The owner should be provided with the decision framework and the analgesic plan. The owner should also be provided with the monitoring and the escalation criteria. The owner should also be provided with the welfare and safety considerations. The owner should be encouraged to provide the questions and to ask any changes in the animal's behavior or condition. The owner should also be encouraged to contact the veterinarian if the animal is not in pain or if the animal develops adverse effects. ### The Decision Framework and the Veterinary Team The veterinary team should be trained on the decision framework and the use of the framework. The team should also be trained on the monitoring and the escalation criteria. The team should also be trained on the welfare and safety considerations. The team should use the framework to improve the treatment of the animals and the satisfaction of the owner. The team should also use the framework to improve the practice of the veterinary medicine. The team should also use the framework to improve the welfare of the animals. ### The Decision Framework and the Medical Record The decision framework should be documented in the medical record. The record should include the drug's name, the drug, the dose, the frequency, and the time of administration. The record should also include the pain score, the monitoring parameters, and the escalation criteria. The record should be reviewed at each reassessment and updated as needed. The record should also be reviewed at the end of the treatment and the outcome should be recorded. The record should be used to improve the treatment of the animals and the practice of the veterinary medicine. ### The Decision Framework and the Welfare The decision framework is a tool that can be used to improve the welfare of the animals. The framework can be used to ensure that the animals receive the appropriate and effective analgesic and the appropriate monitoring. The framework can also be used to ensure that the animals are not harmed by the drug or the adverse effects. The veterinarian should use the framework to improve the welfare of the animals. The veterinarian should also use the framework to improve the satisfaction of the owner. The veterinarian should also use the framework to improve the practice of the veterinary medicine. ### The Decision Framework and the Owner The owner should be provided with the decision framework and the analgesic plan. The owner should also be provided with the monitoring and the escalation criteria. The owner should also be provided with the welfare and safety considerations. The owner should be encouraged to provide the questions and to ask any changes in the animal's behavior or condition. The owner should also be encouraged to contact the veterinarian if the animal is not in pain or if the animal develops adverse effects. ### The Decision Framework and the Veterinary Team The veterinary team should be trained on the decision framework and the use of the framework. The team should also be trained on the monitoring and the escalation criteria. The team should also be trained on the welfare and safety considerations. The team should use the framework to improve the treatment of the animals and the satisfaction of the owner. The team should also use the framework to improve the practice of the veterinary medicine. The team should also use the framework to improve the welfare of the animals. ### The Decision Framework and the Medical Record The decision framework should be documented in the medical record. The record should include the drug's name, the drug, the dose, the frequency, and the time of administration. The record should also include the pain score, the monitoring parameters, and the escalation criteria. The record should be reviewed at each reassessment and updated as needed. The record should also be reviewed at the end of the treatment and the outcome should be recorded. The record should be used to improve the treatment of the animals and the practice of the veterinary medicine. ### The Decision Framework and the Welfare The decision framework is a tool that can be used to improve the welfare of the animals. The framework can be used to ensure that the animals receive the appropriate and effective analgesic and the appropriate monitoring. The framework can also be used to ensure that the animals are not harmed by the drug or the adverse effects. The veterinarian should use the framework to improve the welfare of the animals. The veterinarian should also use the framework to improve the satisfaction of the owner. The veterinarian should also use the framework to improve the practice of the veterinary medicine. ### The Decision Framework and the Owner The owner should be provided with the decision framework and the analgesic plan. The owner should also be provided with the monitoring and the escalation criteria. The owner should also be provided with the welfare and safety considerations. The owner should be encouraged to provide the questions and to ask any changes in the animal's behavior or condition. The owner should also be encouraged to contact the veterinarian if the animal is not in pain or if the animal develops adverse effects. ### The Decision Framework and the Veterinary Team The veterinary team should be trained on the decision framework and the use of the framework. The team should also be trained on the monitoring and the escalation criteria. The team should also be trained on the welfare and safety considerations. The team should use the framework to improve the treatment of the animals and the satisfaction of the owner. The team should also use the framework to improve the practice of the veterinary medicine. The team should also use the framework to improve the welfare of the animals. ### The Decision Framework and the Medical Record The decision framework should be documented in the medical record. The record should include the drug's name, the drug, the dose, the frequency, and the time of administration. The record should also include the pain score, the monitoring parameters, and the escalation criteria. The record should be reviewed at each reassessment and updated as needed. The record should also be reviewed at the end of the treatment and the outcome should be recorded. The record should be used to improve the treatment of the animals and the practice of the veterinary medicine. ### The Decision Framework and the Welfare The decision framework is a tool that can be used to improve the welfare of the animals. The framework can be used to ensure that the animals receive the appropriate and effective analgesic and the appropriate monitoring. The framework can also be used to ensure that the animals are not harmed by the drug or the adverse effects. The veterinarian should use the framework to improve the welfare of the animals. The veterinarian should also use the framework to improve the satisfaction of the owner. The veterinarian should also use the framework to improve the practice of the veterinary medicine. ### The Decision Framework and the Owner The owner should be provided with the decision framework and the analgesic plan. The owner should also be provided with the monitoring and the escalation criteria. The owner should also be provided with the welfare and safety considerations. The owner should be encouraged to provide the questions and ask any changes in the animal's behavior or condition. The owner should also be encouraged to contact the veterinarian if the animal is not in pain or if the animal develops adverse effects. ### The Decision Framework and the Veterinary Team The veterinary team should be trained on the decision framework and the use of the framework. The team should also be trained on the monitoring and the escalation criteria. The team should also be trained on the welfare and safety considerations. The team should use the framework to improve the treatment of the animals and the satisfaction of the owner. The team should also use the framework to improve the practice of the veterinary medicine. The team should also use the framework to improve the welfare of the animals. ### The Decision Framework and the Medical Record The decision framework should be documented in the medical record. The record should include the drug's name, the drug, the dose, the frequency, and the time of administration. The record should also include the pain score, the monitoring parameters, and the escalation criteria. The record should be reviewed at each reassessment and updated as needed. The record should also be reviewed at the end of the treatment and the outcome should be recorded. The record should be used to improve the treatment of the animals and the practice of the veterinary medicine. ### The Decision Framework and the Welfare The decision framework is a tool that can be used to improve the welfare of the animals. The framework can be used to ensure that the animals receive the appropriate and effective analgesic and the appropriate monitoring. The framework can also be used to ensure that the animals are not harmed by the drug or the adverse effects. The veterinarian should use the framework to improve the welfare of the animals. The veterinarian should also use the framework to improve the satisfaction of the owner. The veterinarian should also use the framework to improve the practice of the veterinary medicine. ### The Decision Framework and the Owner The owner should be provided with the decision framework and the analgesic plan. The owner should also ## Frequently Asked Questions ### How do I know if my rabbit is in pain? Rabbits in pain may show a hunched posture, a flat facial expression, and a reduced appetite. They may grind their teeth or sit with their eyes partially closed. They may also be less active and may not groom themselves. If you notice these signs, contact your veterinarian. ### Can I give my guinea pig ibuprofen for pain? Ibuprofen is not recommended for guinea pigs. It can cause gastrointestinal ulceration and renal impairment. The veterinarian should prescribe a safe analgesic for your guinea pig. ### What is the best analgesic for a rat after surgery? Buprenorphine is commonly used for pain relief in rats after surgery. It provides pain relief and has a lower risk of respiratory depression. The veterinarian will determine the appropriate dose and route. ### How long does pain last after a rabbit dental procedure? Pain after a dental procedure can last for several days. The veterinarian will prescribe an analgesic to manage the pain. The veterinarian will also recommend a soft diet and monitoring for appetite and fecal output. ### Can I use a topical anesthetic on a mouse? Topical anesthetics can be used on mice for wound management. However, the veterinarian should determine the appropriate drug and dose. The veterinarian should also monitor for toxicity. ### What should I do if my rat is in pain? If your rat is in pain, contact your veterinarian. The veterinarian will assess the rat's pain level and prescribe an appropriate analgesic. Do not administer any drug without veterinary guidance. ### Are NSAIDs safe for rabbits? NSAIDs can be safe for rabbits when used at the appropriate dose and for a short duration. However, they can cause gastrointestinal ulceration and renal impairment. The veterinarian should monitor the rabbit for adverse effects. ### How do I monitor a small mammal for pain? Monitor the animal's appetite, urine output, fecal output, and behavior. The animal should be active and responsive. If the animal is hunched, has a flat facial expression, or is not eating, contact your veterinarian. ## Related Veterinary Guides - [What Do Rabbits Need In Their Diet](/knowledge/veterinary-medicine/nutrition/what-do-rabbits-need-in-their-diet) - [Recognizing and Managing Postoperative Pain in Laboratory Rabbits](/knowledge/veterinary-medicine/laboratory-animal-science/recognizing-managing-postoperative-pain-laboratory-rabbits) - [Environmental Enrichment for Laboratory Guinea Pigs: Practical Strategies](/knowledge/veterinary-medicine/laboratory-animal-science/environmental-enrichment-laboratory-guinea-pigs) - [Small Mammal Emergency Signs](/knowledge/veterinary-medicine/small-mammal-care/small-mammal-emergency-signs) - [Small Mammal Safe Bedding](/knowledge/veterinary-medicine/small-mammal-care/small-mammal-safe-bedding) ## References and Further Reading - [Pet Care](https://www.avma.org/resources-tools/pet-owners). American Veterinary Medical Association. - [AAHA Guidelines](https://www.aaha.org/resources). American Animal Hospital Association. - [Global Guidelines](https://wsava.org/global-guidelines). World Small Animal Veterinary Association. - [Merck Veterinary Manual](https://www.merckvetmanual.com/). Merck Veterinary Manual. - [Cornell University College of Veterinary Medicine](https://www.vet.cornell.edu/). Cornell University. - [Animal Health and Welfare](https://www.woah.org/en/what-we-do/animal-health-and-welfare). World Organisation for Animal Health. - [The American College of Veterinary Anesthesia and Analgesia Small Animal Anesthesia and Sedation Monitoring Guidelines 2025.](https://pubmed.ncbi.nlm.nih.gov/40447502). Veterinary anaesthesia and analgesia, 2025. - [Pain Management in Labor.](https://pubmed.ncbi.nlm.nih.gov/33719377). American family physician, 2021. - [Analgesia of small mammals.](https://pubmed.ncbi.nlm.nih.gov/11217466). The veterinary clinics of North America. Exotic animal practice, 2001. - [A systematic review of the use of peri-operative systemic ketamine in cats and dogs for analgesia.](https://pubmed.ncbi.nlm.nih.gov/40204087). Veterinary journal (London, England : 1997), 2025. - [Patient-controlled analgesia.](https://pubmed.ncbi.nlm.nih.gov/16305460). Current drug targets, 2005. > This article is educational and is not a substitute for veterinary diagnosis or treatment. Contact a veterinarian for advice about an individual animal.