Dog Not Drinking Water: What the Vet Will Do and How Much It Costs

By Dr. Zubair Khalid, DVM, MS, PhD · 2026-08-14

Key Takeaways

• A dog refusing water necessitates prompt veterinary assessment, as dehydration can rapidly escalate, particularly in smaller canines. Critical signs like collapse, repeated vomiting, or a painful abdomen mandate immediate emergency veterinary intervention.
• Common underlying causes for reduced water intake include nausea, oral pain (e.g., dental issues, foreign objects), or general discomfort from injuries or infections. Persistent signs warrant professional evaluation.
• Diagnostic workup typically involves a thorough physical examination, including assessment of hydration status, temperature, heart rate, and gum moisture. Blood chemistry panels and urinalysis are crucial for evaluating kidney and liver function, electrolyte balance, and detecting infections or diabetes.
• Treatment for dehydration often involves intravenous (IV) or subcutaneous fluid administration, with IV fluids being more effective for severe cases. The cost of care is directly correlated with the diagnostic tests performed and the intensity of treatment required, ranging from a basic exam fee to several hundred dollars for extensive workups and hospitalization.
• Owners should avoid administering human electrolyte drinks, milk, or forcing water, as these can exacerbate the condition or lead to aspiration pneumonia. Instead, offer fresh water and monitor for specific clinical signs to provide accurate history to the veterinarian.
• Routine wellness examinations are vital for early detection of chronic conditions like kidney disease or diabetes, which can manifest as altered drinking habits. Monitoring a dog's baseline water intake when healthy aids in identifying significant deviations.

If your dog has stopped drinking water, you are right to be concerned. A healthy dog should drink regularly throughout the day, and a sudden drop in water intake can signal an underlying problem. The most important thing to know right now is this: if your dog is also vomiting, has diarrhea, is collapsing, has a bloated or painful belly, or cannot stand, do not wait for an appointment. Go to an emergency veterinary hospital immediately. Those signs can point to life-threatening conditions like a blockage, severe dehydration, or organ failure.

For dogs that are otherwise acting fairly normal but simply not drinking, you still need veterinary attention, usually within the same day. Dehydration can develop quickly, especially in small dogs, and the cause of the reduced thirst is rarely something you can fix at home. A veterinarian will need to examine your dog, run some tests, and decide whether fluids are needed. The cost of that visit will depend on what the exam shows, but you can expect a range from a basic office visit to a more involved workup with bloodwork and IV fluids. This article walks you through what happens at the clinic and what you will likely pay.

Is This an Emergency?

Use this table to decide how quickly your dog needs care. When in doubt, call a veterinary clinic and describe what you are seeing. They can help you decide, but they cannot examine your dog over the phone.

{
 "type": "triage",
 "title": "Urgency triage by severity of signs",
 "tiers": [
  {
   "tier": "danger",
   "label": "Go to an emergency vet now",
   "signs": [
    "Collapse, inability to stand, seizures, repeated vomiting, diarrhea with blood, a swollen or hard belly, obvious pain when the belly is touched, pale or gray gums, rapid breathing at rest, or no urine produced in 12 hours"
   ],
   "action": [
    "Do not wait",
    "These signs can indicate poisoning, a twisted stomach, kidney failure, or severe dehydration",
    "Drive to the nearest emergency hospital"
   ]
  },
  {
   "tier": "warn",
   "label": "Book a same-day appointment",
   "signs": [
    "Not drinking for more than 12 hours, dry or sticky gums, sunken eyes, skin that stays tented when gently pinched, lethargy, less energy than usual, or a decrease in urination"
   ],
   "action": [
    "Call your regular vet first thing in the morning",
    "If they cannot fit you in, ask for a referral to a same-day clinic",
    "Dehydration can worsen quickly"
   ]
  },
  {
   "tier": "safe",
   "label": "Watch at home for a defined period",
   "signs": [
    "Your dog drank less than usual but still drank some, is eating normally, has normal energy, and is urinating normally"
   ],
   "action": [
    "Offer fresh water in a clean bowl and monitor intake closely",
    "If your dog drinks nothing over the next 6 to 8 hours, or if any other sign appears, move up to a same-day appointment"
   ]
  }
 ]
}

What Is Most Likely Going On?

The most common reason a dog stops drinking is that they feel unwell. Nausea is a frequent culprit. A dog with an upset stomach may refuse water because drinking makes the nausea worse. You might notice drooling, lip licking, or swallowing more often. These are subtle signs of nausea that many owners miss.

Another common cause is a change in the mouth. A broken tooth, a sore gum, or a foreign object stuck between the teeth can make drinking painful. Check your dog's mouth gently if they will let you. Look for redness, swelling, or something wedged in the teeth. If you see a problem, that is a reason for a same-day visit.

Pain from arthritis, an injury, or an infection can also reduce thirst. Dogs in pain often lose interest in food and water. Watch for limping, whining, or reluctance to move. The MSD Veterinary Manual notes that digestive disorders frequently cause reduced appetite and thirst in dogs, and those signs warrant a veterinary evaluation when they persist beyond a day.

What Else Could It Be?

Several conditions can cause a dog to stop drinking, and many of them are not obvious from the outside. Kidney disease is a serious possibility. The kidneys regulate water balance, and when they start to fail, a dog may drink less or more depending on the stage. Bloodwork is the only reliable way to check kidney function.

Diabetes is another condition that changes thirst patterns. Some diabetic dogs drink excessively, while others drink less as the disease progresses. A simple blood test can check for this.

Infections, including urinary tract infections, can make a dog feel miserable enough to stop drinking. A fever from any infection can also reduce thirst. You cannot reliably tell if your dog has a fever by touch alone. A thermometer at the clinic will give an accurate reading.

Less common but serious causes include poisoning, a foreign body blocking the stomach or intestines, and liver disease. Each of these requires prompt testing and treatment. The American Veterinary Medical Association advises that any sudden change in your pet's drinking or eating habits should be discussed with your veterinarian, because the cause may be treatable if caught early.

What the Vet Will Do First

The first step is a physical exam. The veterinarian will check your dog's temperature, heart rate, breathing, and gum color. They will feel the belly for pain or swelling. They will also assess hydration by checking the moisture of the gums and how quickly the skin returns to place when gently lifted.

Based on that exam, the vet will likely recommend bloodwork. A blood panel checks kidney and liver values, blood sugar, and electrolyte levels. Electrolytes are minerals like sodium and potassium that help nerves and muscles work. Dehydration throws these out of balance, and correcting them is part of treatment.

The vet may also recommend a urine test. Urine can show signs of kidney disease, diabetes, or infection. In some cases, X-rays or an ultrasound are needed to look for a blockage or other structural problem. The American Animal Hospital Association emphasizes that diagnostic testing is guided by the exam findings, so the vet will explain which tests they recommend and why.

What Treatment Looks Like

If your dog is mildly dehydrated and the bloodwork is reassuring, the vet may send them home with instructions to offer small amounts of water frequently. They might also recommend a bland diet to settle the stomach. You should never force water into a dog's mouth, as that can cause choking or aspiration, where fluid enters the lungs.

If your dog is moderately or severely dehydrated, the vet will give fluids. This is usually done intravenously, meaning through a needle placed in a vein, or under the skin in a technique called subcutaneous fluids. IV fluids are faster and more effective for serious dehydration. Your dog may need to stay in the hospital for several hours or overnight so the fluids can be given safely and the response monitored.

The underlying cause determines the rest of the treatment. If an infection is found, antibiotics may be prescribed. If kidney disease is diagnosed, a special diet and ongoing care will be discussed. If a blockage is found, surgery may be necessary. The cost of treatment rises with the complexity of the diagnosis, so the final bill depends heavily on what the tests reveal.

What You Can Do at Home Right Now

If your dog is alert, walking normally, and has no vomiting or diarrhea, you can try a few safe steps while you decide whether to call the vet.

Offer fresh water in a clean bowl. Some dogs prefer running water, so a pet fountain or a slowly running tap may encourage drinking. You can also offer ice cubes to lick, or add a small amount of low-sodium chicken broth to the water. Do not force water into your dog's mouth with a syringe or bottle. Forcing liquid can cause choking or aspiration, which means liquid entering the lungs, and that can lead to pneumonia.

Do not give your dog milk, sports drinks, or human electrolyte beverages. These can upset the stomach and make the problem worse. Do not offer alcohol, caffeine, or any medication meant for people.

You can check for dehydration at home, but this is not a substitute for a veterinary exam. Gently lift the skin between your dog's shoulder blades and let it go. In a well-hydrated dog, the skin snaps back quickly. If it returns slowly or stays tented, that suggests dehydration. Also feel your dog's gums. They should be moist and slick. Sticky or dry gums are a warning sign. Press a finger against the gum above a tooth and release. The white spot should refill with color within two seconds. Slower refill can mean poor circulation.

These checks help you describe what you see, but they cannot tell you why your dog stopped drinking. Many causes look identical from the outside.

What to Measure and Write Down Before You Call

Write down the answers to these questions before you contact a vet. This saves time and helps the vet make a better plan.

• How many hours or days has your dog not been drinking?
• How many times in the past hour has your dog urinated, and what color was the urine?
• Has your dog vomited, and if so, how many times and what did it look like?
• Has your dog had diarrhea, and does it contain blood?
• Is your dog eating normally, eating less, or refusing food?
• What is your dog's energy level compared with yesterday?
• Count your dog's breathing rate at rest for one full minute. Normal is usually 10 to 30 breaths per minute, but know what is normal for your dog.
• List any medications, supplements, or recent diet changes.
• Note any possible access to toxins, such as chocolate, grapes, lilies, antifreeze, or rat poison.

Bring this list to the appointment or have it ready for a phone call.

What the Vet Will Ask and Do

The veterinarian will start with a full history and a physical exam. They will ask about appetite, vomiting, diarrhea, energy, urination, and any possible toxin exposure. They will feel your dog's abdomen, listen to the heart and lungs, check the gums, and take a temperature. This hands-on exam is essential. A dog that will not drink can have many causes, including kidney disease, pancreatitis, an obstruction, infection, or dental pain. The MSD Veterinary Manual notes that digestive disorders in dogs can produce signs like vomiting, diarrhea, and reduced appetite, and these need a professional evaluation to sort out.

Based on the exam, the vet may recommend tests. Here is what those tests look for and roughly what they cost.

These are general ranges only. Prices vary widely by region, by clinic, and by whether you see a general practice or a specialty hospital. An emergency or after-hours visit will cost more than a scheduled daytime appointment. Ask for an estimate before any test is run.

What Drives the Cost Up or Down

The biggest cost factor is whether your dog needs IV fluids. Intravenous fluids, meaning fluids given through a needle into a vein, are the standard treatment for dehydration that cannot be corrected by drinking. The vet will determine the fluid type and rate based on your dog's weight, bloodwork, and exam findings. Dosing must come from the treating veterinarian because giving too much or too little fluid can be dangerous.

A simple case where the dog starts drinking after a mild exam and some encouragement may cost only the exam fee. A case that requires bloodwork, urinalysis, IV fluids, and an overnight stay can cost several hundred to over a thousand dollars. The cost rises with the number of tests, the hours of hospitalization, and the need for imaging or surgery. If your dog has an obstruction that requires surgery, that is a separate and much larger expense.

Ask your vet for a written estimate before treatment begins. Many clinics offer payment plans or accept pet insurance. The American Veterinary Medical Association provides guidance on working with your veterinarian and understanding the costs of care, so you can ask informed questions.

When an Online Vet Can Help, and When It Cannot

Any situation in this article that involves vomiting, diarrhea with blood, a bloated or painful abdomen, collapse, difficulty breathing, or a dog that has not drunk for more than 24 hours requires hands-on care. Do not use a remote consultation for these. Go to an emergency clinic immediately.

A remote consultation is genuinely useful for an early or mild presentation. If your dog skipped one water bowl refill but is otherwise acting normal, an online vet can help you decide whether a visit is needed. They can also help with a recheck on a known problem, such as a dog recovering from a stomach upset, or a question about whether a sign warrants a trip to the clinic. A medication side effect question, such as whether a new drug could reduce thirst, is another good use.

A remote vet can take a history, watch your dog move on video, look at visible signs like gum color, and advise you. In many states they can prescribe medication, but prescribing rules differ by state and a veterinarian may require an in-person examination first. What a remote vet cannot do is palpate the abdomen, listen to the chest, take a temperature, run bloodwork, or image anything. Those limitations matter. A dog that looks fine on camera can still have a serious problem that only a physical exam and tests will reveal. Use remote care for triage and follow-up, not for diagnosis of an unknown cause.

Common Mistakes Owners Make

When a dog stops drinking, even careful owners can slip into habits that delay care or make the problem worse. Here are the most frequent missteps and what to do instead.

The most important shift is timing. A single missed day of drinking can matter a great deal in a small dog, an older dog, or a dog with an existing illness. The American Veterinary Medical Association advises owners to contact a veterinarian promptly when a pet shows a change in behavior like refusing water, instead of waiting to see if it resolves on its own.

How to Reduce the Chance of It Happening Again

Some causes of reduced drinking, like a brief stomach upset, will not repeat. Others benefit from steady habits.

Keep fresh water available at all times and change it daily. Some dogs prefer running water, so a pet fountain can encourage normal drinking. Wash the bowl with soap and hot water each day to prevent biofilm buildup that can alter taste.

Monitor your dog's normal water intake for a few days when it is healthy. Count how many times it drinks in a day and roughly how much. That baseline makes it easier to spot a real drop later.

Stay current on routine wellness visits. Bloodwork done once a year can catch early kidney disease, diabetes, or hormonal problems before they cause visible signs like refusing water. The American Animal Hospital Association recommends regular preventive care exams as the foundation for catching problems early.

After any illness that caused vomiting or diarrhea, reintroduce food slowly and keep water available in small amounts. Offer a few tablespoons every 15 to 20 minutes instead of a full bowl, which can trigger nausea in a recovering stomach.

What Recovery and Ongoing Management Usually Look Like

Recovery time depends entirely on the cause. A dog with a mild stomach bug that needed a day of fluids may act normal within 24 to 48 hours. A dog with kidney disease or an obstruction may need days in the hospital and ongoing medication at home.

After IV fluids, most dogs start showing interest in water within a few hours. Your vet will likely ask you to offer small amounts and track how much the dog drinks over the next day. You may need to return for a recheck blood test to confirm hydration and organ function are improving.

For chronic conditions like kidney disease, management is long-term. That usually means a prescription diet, daily access to fresh water, and regular bloodwork every few months. The MSD Veterinary Manual Pet Owner Version explains that chronic kidney disease requires ongoing monitoring and dietary adjustment, not a one-time fix.

Expect to watch for warning signs during recovery. Call your vet if the dog starts vomiting again, refuses food for more than a day, becomes lethargic, or stops urinating. These signs can mean the underlying problem is not resolved.

Frequently Asked Questions

How long can a dog safely go without water before seeing a vet?

There is no safe universal window. A healthy adult dog can often manage 24 hours without water, but that is not a reason to wait. Puppies, seniors, and dogs with medical conditions can become dehydrated much faster. If your dog has not drunk for 12 hours and also has vomiting, diarrhea, or weakness, seek veterinary care the same day. If the dog is otherwise acting normal, call your vet for guidance within a few hours. Dehydration affects every organ system, so earlier care is always safer.

Will my dog need to stay overnight at the hospital?

Not always. Many dogs receive a few hours of IV fluids and go home the same day with instructions to monitor drinking. Overnight stays are more likely if bloodwork shows significant kidney or liver problems, if the dog is severely dehydrated, or if it needs surgery for a blockage. Your vet will give you a clear estimate before admission. Ask about the expected length of stay and what signs would require a return visit.

Can I give my dog Pedialyte or Gatorade?

No. These products contain sugar, sodium, and electrolytes balanced for humans, not dogs. High sugar can worsen nausea or diarrhea. Some flavors contain xylitol, which is highly toxic to dogs. Plain water is the safest choice. If your vet recommends electrolyte replacement, they will provide a veterinary-specific product and tell you exactly how to use it. Never improvise with human rehydration drinks.

What if my dog drinks water but then vomits it right back?

That pattern is concerning because the dog is losing fluid faster than it can absorb it. Stop offering water for about 30 minutes, then offer a small amount, roughly a tablespoon for a small dog or a quarter cup for a large dog. If vomiting continues after the second attempt, call your vet immediately. Repeated vomiting after drinking can indicate an obstruction, severe gastroenteritis, or pancreatitis, all of which need in-person evaluation.

How much does follow-up care cost after the initial visit?

Follow-up costs vary widely. A recheck exam and bloodwork might run from 60 to 250 dollars depending on your region and clinic. A prescription diet for chronic kidney disease can add 40 to 100 dollars per month. Ongoing medication for conditions like pancreatitis or inflammatory bowel disease adds more. Ask your vet for a written estimate before any follow-up procedure. Many clinics offer payment plans or accept pet insurance, so ask about those options if cost is a concern.

When can my dog return to normal exercise after treatment?

Follow your vet's specific advice, but a general rule is to keep activity light for 24 to 48 hours after IV fluids. Short leash walks for bathroom breaks are fine. Avoid running, jumping, or long hikes until the dog is eating and drinking normally and has normal energy. If the underlying cause was a blockage or surgery, your vet will give a longer restriction period, often 10 to 14 days. Sudden return to full activity can delay healing or cause complications.

Related Clinical & Scientific Guides

• Cat Straining to Poop but Only Passing Mucus: Causes and Care
• Cat Upset Stomach: Home Remedies That Are Safe
• Cat Straining to Poop but Nothing Comes Out: Emergency or Not?

References and Further Reading

• MSD Veterinary Manual Digestive Disorders of Dogs and Cats
• AVMA Pet Owner Resources
• MSD Veterinary Manual Pet Owner Version
• AAHA Pet Owner Resources

Related Articles

• Dog Straining to Poop: What the Vet Will Do and How Much It Costs
• Dog Blood in Stool: What the Vet Will Do and How Much It Costs
• Dog Not Eating: What the Vet Will Check and How Much It Costs
• Dog Excessive Thirst and Urination: What the Vet Will Do and Costs
• Dog Straining to Urinate: What the Vet Will Do and Costs

This article is general educational information for pet owners. It is not a substitute for veterinary diagnosis, examination, or treatment. If your pet is showing severe or rapidly worsening signs, contact an emergency veterinary hospital immediately.