Rabbit Diarrhea: Causes, Cecotropes vs. True Diarrhea & What To Do
General guidance — not a diagnosis. When in doubt, call your vet.
When a rabbit owner notices soft, wet, or messy droppings, the first question to ask is: is this true diarrhea or a cecotrope problem? The answer dramatically changes how urgent the situation is.
Understanding Rabbit Droppings
Rabbits produce two types of droppings:
Hard fecal pellets — the round, firm droppings you see in the litter box. These are waste material.
Cecotropes — soft, clustered, grape-like droppings produced by the cecum, rich in nutrients, protein, and beneficial bacteria. Healthy rabbits eat these directly from their anus, usually at night. You should almost never see cecotropes in the litter box — if you do, your rabbit isn't consuming them properly.
Cecotrope Problems vs. True Diarrhea
Soft/Mushy Cecotropes (Cecal Dysbiosis)
The most common "diarrhea" complaint in rabbits isn't true diarrhea at all — it's uneaten or abnormally soft cecotropes smeared around the rabbit's hindquarters and litter box. This happens when:
- The diet is too high in carbohydrates, sugar, or pellets and too low in hay
- The rabbit is overweight and can't reach their hindquarters to consume cecotropes
- There's an underlying GI imbalance
This is not a life-threatening emergency, but it does need dietary correction. Increase hay to unlimited amounts, remove all treats and fruit, and reduce pellets.
True Diarrhea
True diarrhea — watery, liquid stool in the absence of normal round pellets — is a medical emergency in rabbits. It can develop from:
- Bacterial infection (E. coli, Clostridium, Salmonella)
- Viral infection (Rabbit Hemorrhagic Disease, particularly in young rabbits)
- Parasites (Coccidia — especially in young or recently acquired rabbits)
- Inappropriate antibiotic use — some antibiotics are toxic to the rabbit GI microbiome
True diarrhea in rabbits causes rapid dehydration and can be fatal within 24-48 hours without treatment (AEMV Pet Care Guides, 2024).
How to Tell the Difference
| | Cecotrope Problem | True Diarrhea | |||| | Normal hard pellets present? | Yes | No | | Consistency | Soft, mushy, sticky | Liquid, watery | | Rabbit eating? | Usually yes | Often no | | Urgency | Non-emergency | Emergency |
Emergency Warning Signs
Go to an exotic vet immediately if:
- Your rabbit has watery liquid stool with no normal pellets
- Your rabbit is not eating or moving
- Your rabbit appears lethargic, cold, or limp
- The rabbit is very young (under 12 weeks)
- Onset was sudden and rapid
For rabbit owners
An article can't ask about your rabbit.
Describe what you're seeing. You'll get a few follow-up questions about your rabbit, then where it lands — vet today, watch closely, or no visit needed — and what to do at home meanwhile.
What To Do at Home (for cecotrope problems only)
- Remove all pellets, treats, and fresh vegetables temporarily and feed unlimited grass hay
- Ensure fresh water is available at all times
- Keep the hindquarters clean and dry to prevent flystrike (flies laying eggs in soiled fur)
- Monitor for normal pellet production — if pellets stop, seek care immediately
Frequently Asked Questions
Is my rabbit's mess true diarrhea or a cecotrope problem? This is the key question, and it changes how urgent things are. Most 'diarrhea' complaints are actually uneaten, abnormally soft cecotropes smeared on the hindquarters — a dietary issue, not an emergency. True diarrhea — watery, liquid stool with NO normal round pellets — is a medical emergency in rabbits that can be fatal within 24-48 hours.
What causes soft, mushy cecotropes in rabbits? This 'cecal dysbiosis' happens when the diet is too high in carbohydrates, sugar, or pellets and too low in hay, when the rabbit is overweight and can't reach its hindquarters, or when there's an underlying GI imbalance. It's not immediately life-threatening but needs dietary correction — increase hay to unlimited, remove all treats and fruit, and reduce pellets.
What causes true diarrhea in rabbits, and how serious is it? True (watery) diarrhea is a medical emergency that causes rapid dehydration and can be fatal within 24-48 hours. Causes include bacterial infection (E. coli, Clostridium, Salmonella), viral infection (Rabbit Hemorrhagic Disease, especially in young rabbits), parasites (coccidia in young or new rabbits), and inappropriate antibiotic use (some antibiotics are toxic to the rabbit gut).
How do I tell a cecotrope problem from true diarrhea? With a cecotrope problem, normal hard pellets are still present, the stool is soft/mushy/sticky, and the rabbit is usually still eating — it's non-urgent. With true diarrhea, there are no normal pellets, the stool is liquid and watery, the rabbit is often not eating, and it's an emergency.
When should I rush my rabbit to the vet for diarrhea? Go to an exotic vet immediately if your rabbit has watery liquid stool with no normal pellets, isn't eating or moving, appears lethargic, cold, or limp, is very young (under 12 weeks), or the onset was sudden. For cecotrope problems only, you can correct the diet at home (unlimited hay, no treats or pellets temporarily), keep the hindquarters clean to prevent flystrike, and seek care immediately if pellets stop.
Still Not Sure if Your Rabbit Needs a Vet?
When you're not sure if this is wait-and-see or call-tonight, Voyage AI Vet triages in under 2 minutes. Describe what you're seeing in chat, share photos of your rabbit's droppings (or lack of) and their belly, or hop on a live video call if you want a second pair of eyes. Every answer comes with citations to the actual veterinary literature it's pulling from — so you see exactly where the guidance comes from, not just a chatbot's word.