Why Does My Rabbit Have Diarrhea? Causes and Care
By Dr. Zubair Khalid, DVM, MS, PhD ·
Why does my rabbit have diarrhea? In most cases, true diarrhea in a rabbit means something is seriously wrong with the digestive tract, and it is not a problem you can wait out at home. Unlike a dog or cat with a mild upset stomach, a rabbit with loose stool can decline quickly. This article is educational and is not a substitute for veterinary diagnosis or treatment.
Quick Answer
- True diarrhea in a rabbit is a medical emergency, not a minor stomach bug. Seek veterinary care promptly [1].
- The most common triggers are sudden diet changes, stress, antibiotics, a dirty cage, and intestinal infections [1].
- Young rabbits are hit hardest. Intestinal disease is a major cause of death in young rabbits [1].
- Do not withhold food or water. Keep hay, fresh water, and a clean, quiet space available while you arrange care.
- Call your vet the same day you notice loose stool. Call immediately if your rabbit is also not eating, is hunched, or is limp.
What Rabbit Diarrhea Actually Looks Like
Owners often use "diarrhea" to describe two very different problems. Knowing which one you are seeing helps your vet.
True diarrhea
True diarrhea is unformed, watery, or pudding-like stool that soils the fur around the tail. It may be frequent, and it often smells strong. This is the dangerous form. Diarrhea in a rabbit at any age is a serious warning sign of illness [1].
Soft cecotropes (often mistaken for diarrhea)
Rabbits produce two kinds of droppings. The hard, round pellets are the ones you normally see. Cecotropes are soft, dark, shiny clusters that a healthy rabbit eats directly from its bottom, so you rarely notice them. If your rabbit is leaving cecotropes uneaten, the stool may look like paste or jam. That is a different problem from true diarrhea, but it still deserves a vet call.
What is normal
Normal rabbit droppings are round, firm, and fairly uniform, and a healthy rabbit produces them steadily through the day. A rabbit that suddenly has fewer or smaller droppings is also a concern. Digestive upset can show up as diarrhea or as fewer droppings, and either one means you should seek veterinary care promptly [1].
Why Is My Rabbit Having Diarrhea? The Main Causes
The rabbit gut runs on a delicate balance of bacteria. When that balance tips, harmful bacteria multiply, produce toxic substances and gas, and the rabbit feels bloated and painful, which makes it even less likely to eat [1]. That cycle is why diarrhea and appetite loss so often travel together.
Diet changes, stress, antibiotics, and a dirty cage can all upset the normal bacteria in the digestive tract and raise the risk of disease [1].
| Cause | Typical clues | How urgent |
|---|---|---|
| Sudden diet change or too little fiber | New food, treats, or pellets introduced recently. Droppings change within a day or two. May progress to GI stasis [1] | Same-day vet visit |
| Stress (new home, travel, predators, heat) | Recent move, new pet, loud household. Loose stool with normal appetite at first [1] | Same-day vet visit |
| Antibiotics | Loose stool started after a course of antibiotics. Antibiotics can upset normal gut bacteria [1] | Call the prescribing vet now |
| Intestinal coccidiosis (Eimeria species) | Young rabbit, poor growth, loose or bloody stool, rough coat. A major cause of illness and death in rabbits [2] | Same-day vet visit |
| Bacterial enteritis (for example, enterotoxigenic E. coli) | Watery stool, lethargy, rapid decline. Bacterial diarrheal illness can be severe [3] | Emergency now |
| Hepatic coccidiosis (Eimeria stiedae) | Weight loss, poor appetite, enlarged liver on exam. Affects the liver and bile ducts [4] | Same-day vet visit |
| Post-weaning diarrhea in young rabbits | Loose stool starting around the time a young rabbit leaves its mother or changes feed [5] | Same-day vet visit |
| GI stasis with secondary loose stool | Not eating, small or absent droppings, hunched posture, teeth grinding [1] | Emergency now |
A few notes on that table. Coccidiosis comes in intestinal and liver forms, and it is a major cause of sickness and death in rabbits [2]. The two forms can look alike on a fecal float, so your vet may need molecular testing to tell them apart [4]. Post-weaning diarrhea has become a bigger problem in rabbits since antibiotic growth promoters were removed from feed, which is why probiotics are being studied as an alternative [5]. If your rabbit is sneezing or has nasal discharge along with gut signs, that points to a separate respiratory issue, and you can read more about it in Rabbit Sneezing Causes.
Is it normal for rabbits to have diarrhea?
No. It is not normal for a rabbit to have diarrhea at any age. Loose, watery stool is a sign of digestive disease, and digestive disease is a major health concern in rabbits [1]. If you are asking whether you can just watch it for a day, the answer is no.
Red Flags That Make It an Emergency
Some signs mean you should stop reading and call an emergency clinic.
- Your rabbit is not eating or has stopped producing droppings [1].
- Your rabbit is hunched, pressing its belly to the floor, or grinding its teeth.
- Your rabbit is limp, cold, or unresponsive.
- The stool is watery and frequent, or there is blood.
- Your rabbit is a baby or a recently weaned young rabbit. Intestinal disease is a major cause of death in young rabbits [1].
- Your rabbit is bloated or its belly feels tight and hard. Gas and toxic buildup make the rabbit painful, which further reduces eating [1].
If any of these apply, treat it as an emergency. Rabbits hide illness well, and by the time they look sick, they are often very sick.
Safe Things You Can Do at Home While You Wait
Home care does not replace veterinary treatment. These steps keep your rabbit stable and comfortable until you get seen.
Keep food and water available
Do not fast your rabbit. Offer fresh grass hay, which supports normal gut movement, plus clean water in a bowl and a bottle. If your rabbit will not eat on its own, that is a reason to call the vet, not to force food.
Protect the hind end
Loose stool stuck to the fur can burn the skin and attract flies. Gently wipe the area with a warm, damp cloth and dry it well. Keep the bedding clean and change it often. A dirty cage can upset normal gut bacteria and raise disease risk [1].
Reduce stress
Move your rabbit to a quiet, dim area away from barking dogs, loud children, and foot traffic. Handle it as little as possible. Stress is one of the recognized triggers for gut upset in rabbits [1].
Do not give human or leftover medications
Never give an antibiotic, anti-diarrheal, or pain medication meant for people or another pet. Antibiotics can upset the normal bacteria in a rabbit's digestive tract [1], and the wrong drug can make things much worse. Your veterinarian will calculate any dose based on your rabbit's weight and health.
Track what you see
Write down when the diarrhea started, what the stool looks like, whether your rabbit is eating and drinking, and how many droppings it has passed. Bring this to the appointment. It helps your vet decide how urgent things are.
If you also care for other species, the same principles of watching stool, appetite, and energy apply. You can compare notes in Cat Diarrhea: Causes, Home Care, and When to Worry and Kitten Diarrhea: Causes, Safe Home Care, and Emergency Signs.
What Your Veterinarian Will Check and Test
Your vet will start with a full physical exam. They will check your rabbit's weight, hydration, belly feel, teeth, and temperature. Dental disease is one reason a rabbit stops eating and then develops gut problems, so the mouth matters even when the complaint is diarrhea [1].
Questions you will be asked
Expect questions about diet and any recent changes, treats, antibiotics, new rabbits in the home, travel, cage cleaning routine, and how long the stool has been loose. Diet changes, stress, antibiotics, and a dirty cage are all recognized risk factors [1].
Common tests
- Fecal float or fecal smear to look for coccidia (Eimeria species) and other parasites [4][2].
- Fecal culture or PCR testing when a bacterial cause is suspected.
- Blood work to check organ function and hydration.
- Imaging if the vet suspects a blockage or gas buildup.
- Molecular testing when coccidia species need to be told apart, since liver and intestinal forms can look similar under the microscope [4].
Treatment
Treatment depends on the cause. Coccidiosis is managed with specific anti-parasitic drugs, and your vet will choose the product and dose based on your rabbit. In one large field study of 579 rabbits, diclazuril significantly lowered oocyst counts in fecal samples and reduced the risk of liver coccidiosis compared with other groups, while robenidine did not significantly affect oocyst counts but did lower liver coccidiosis risk [2]. That kind of detail is why the choice of drug matters and why it belongs in your vet's hands.
Supportive care often includes fluids, warmth, and a plan to get the gut moving again. If your rabbit has stopped eating, the vet may also address GI stasis, where food movement slows and harmful bacteria produce toxic substances and gas [1].
Preventing Diarrhea and Monitoring Your Rabbit
Prevention is mostly about keeping the gut stable.
Feed a consistent, high-fiber diet
Grass hay should be the base of the diet. Change foods slowly if you must change at all, and keep treats small and infrequent. Too little dietary fiber is a common trigger for gut slowdown [1].
Keep the cage clean
A dirty cage is a listed risk factor for gut disease [1]. Spot-clean daily and do a full clean on a regular schedule.
Limit stress
Keep routines steady. Introduce new rabbits carefully. Avoid sudden changes in housing, temperature, or handling.
Use antibiotics only under veterinary direction
Antibiotics can disrupt normal gut bacteria in rabbits [1]. Never use leftover or borrowed antibiotics.
Consider probiotics with your vet
Host-derived probiotics are being studied as a way to prevent post-weaning diarrhea in rabbits, and one strain showed strong tolerance to acid, bile, and heat plus activity against enteric pathogens in lab testing [5]. This is promising, but ask your vet before adding any supplement.
Weigh and watch
A kitchen scale is one of the best tools you own. Weekly weights catch slow declines before they become emergencies. Count droppings too. Fewer droppings is a warning sign even without diarrhea [1].
Know your risk factors
Young rabbits, recently weaned rabbits, and rabbits in group housing face higher risk. Intestinal disease is a major cause of death in young rabbits [1], and coccidiosis is a major cause of illness and death in rabbits generally [2]. If you keep multiple rabbits, talk to your vet about a monitoring plan.
Limitations and When to Contact a Veterinarian
This article cannot tell you what is wrong with your specific rabbit. Every case needs a veterinarian who can examine the animal, run tests, and prescribe treatment.
Call an emergency clinic right now if your rabbit is not eating, is limp or cold, has watery stool with blood, is bloated, or is a baby with loose stool.
Call your regular vet the same day if your rabbit has loose stool but is still eating and alert, if diarrhea started after antibiotics, or if you noticed a recent diet change or stressful event.
Schedule a routine visit if you are seeing soft cecotropes left uneaten, gradual weight loss, or intermittent stool changes without other signs.
When in doubt, call. Rabbits with digestive disease can go downhill fast, and early treatment gives the best chance of recovery [1].
Frequently Asked Questions
Can I just wait and see if my rabbit's diarrhea clears up?
No. True diarrhea in a rabbit is a serious warning sign of illness, and you should seek veterinary care promptly [1]. Waiting even a day can let dehydration and gut bacteria overgrowth worsen. Call your vet as soon as you notice the change.
Should I stop feeding my rabbit until the diarrhea stops?
No. Never withhold food or water from a rabbit with diarrhea. A rabbit that stops eating can develop GI stasis, where gut movement slows and harmful bacteria produce toxic substances and gas [1]. Keep hay and water available and let your vet guide any diet changes.
Can my rabbit's diarrhea be caused by something I did?
Possibly. Diet changes, stress, antibiotics, and a dirty cage can all upset the normal bacteria in the digestive tract and raise disease risk [1]. That does not mean you caused harm on purpose. It means the fix often starts with diet consistency, a clean cage, and lower stress.
Is diarrhea contagious to my other rabbits?
It depends on the cause. Coccidiosis, which is caused by Eimeria species, spreads easily in shared spaces and is a major cause of illness and death in rabbits [2]. Bacterial causes such as enterotoxigenic E. coli can also spread [3]. Keep the sick rabbit separate and wash your hands between animals until your vet identifies the cause.
How do I know if it is diarrhea or just uneaten cecotropes?
True diarrhea is watery or pudding-like and soils the fur, while uneaten cecotropes look like soft, dark, shiny clusters left in the cage or stuck to the bottom. Both need attention, but true diarrhea is the more urgent sign [1]. If you are unsure which one you are seeing, take a photo and call your vet.
Related Articles
- Rabbit Sneezing Causes
- Why Is My Rabbit Not Drinking Water? Causes and What to Do
- Why Is My Rabbit Eating Its Poop? Is It Normal?
- Rabbit Rotavirus
References
- Digestive Disorders of Rabbits - All Other Pets. Merck Veterinary Manual.
- Resistance concerns and coccidiosis management in rabbit farming: Insights from robenidine, diclazuril and feed evaluations. Veterinary parasitology, 2026.
- Understanding the Propensity of ETEC Diarrhea in Endemic Settings-A Review of Epidemiological and Immunological Factors and Vaccine-Related Preventive Measures Using a Multisectoral Approach. Microorganisms, 2026.
- Gross and histopathological observations and genetic diversity of Eimeria species isolated from the liver and bile duct of experimentally infected rabbits in Iraq. Journal of parasitic diseases : official organ of the Indian Society for Parasitology, 2026.
- Phenotypic, Genomic, and In Vivo Characterization of a Host-Derived Limosilactobacillus fermentum RLF77 with Potential to Prevent Post-weaning Diarrhea in Rabbits. Probiotics and antimicrobial proteins, 2026.