My rabbit has stopped drinking - how much water should it drink?
Published veterinary figures put rabbit water intake at roughly 50 to 100 millilitres per kilogram of body weight a day, so a 2 kilogram rabbit normally drinks somewhere around 100 to 200 millilitres. A rabbit drinking nothing measurable for a day needs a vet, and a rabbit that has also stopped eating or passing droppings for 8 to 12 hours is an emergency now. Measure the bottle or bowl before you decide.
Written by the PetLumen editorial team. Not reviewed by a veterinarian. Unsure how urgent this is? Work through the free urgency checker.
This page is general pet health information, not a diagnosis or treatment plan for your pet. Always confirm anything urgent with a licensed veterinarian.
What to do in the next hour
- Measure what is actually going down. Fill the bottle or bowl with a measured amount, mark the level, and check again in a few hours.
- Offer water in an open bowl as well as a bottle. Many rabbits drink far more from a bowl.
- Test the bottle valve with your finger. A stuck or airlocked valve is a common and completely silent cause.
- Wet the greens you offer, which adds water without forcing anything.
- Check droppings and appetite. Nothing eaten and nothing passed for 8 to 12 hours means call a vet now.
- Look in the mouth only if it does not need a struggle: drooling or a wet chin points at dental pain.
Water intake by rabbit weight
Daily intake using the published range of about 50 to 100 millilitres per kilogram a day. Intake drops legitimately when a rabbit eats a lot of wet greens.
| Rabbit weight | Expected daily water | Well under this for a day |
|---|---|---|
| 1 kg / 2.2 lb | 50 to 100 ml | Call your vet for advice today |
| 2 kg / 4.4 lb | 100 to 200 ml | Call your vet for advice today |
| 3 kg / 6.6 lb | 150 to 300 ml | Call your vet for advice today |
| 4 kg / 8.8 lb | 200 to 400 ml | Call your vet for advice today |
| Any weight, also off food or no droppings for 8 to 12 hours | Intake figure stops mattering | Emergency visit now |
When to see a vet today
See a vet today if you notice No measurable drinking for a day, with no wet greens offered either, Not drinking and not eating, or no droppings, for 8 to 12 hours, and Skin on the scruff that stays tented when gently lifted, with sunken eyes. These are the signs that should not wait for home care or a watch-and-see approach. If any of them appear, skip the rest of this guide and call your vet or an emergency clinic now - waiting is the risky option.
- ●No measurable drinking for a day, with no wet greens offered either
- ●Not drinking and not eating, or no droppings, for 8 to 12 hours
- ●Skin on the scruff that stays tented when gently lifted, with sunken eyes
- ●Drooling, a wet chin or dropping food while still trying to eat
- ●Straining to urinate, or thick, gritty or bloody urine
- ●Quiet, cold-eared rabbit that will not come for a favourite food
Safe to monitor at home
Milder signs are usually safe to watch for a day or two: Less bottle drinking on a day of wet greens, with normal droppings and appetite, A dip in intake for a few hours after a move or a new water container, and Slightly darker urine on a hot day with normal behaviour. Keep notes and photos so you can spot a trend. Anything that worsens, spreads, or comes with appetite, energy or behavior changes moves out of this category and into a vet visit.
- ●Less bottle drinking on a day of wet greens, with normal droppings and appetite
- ●A dip in intake for a few hours after a move or a new water container
- ●Slightly darker urine on a hot day with normal behaviour
What to photograph or record
Photograph or record Photograph the bottle or bowl with the level marked, and again hours later, Photograph today's droppings beside a coin for scale, and Photograph the chin and front paws, where drool and dampness show in good, even light. Clear, well-framed evidence is what lets a vet - or a PetLumen scan - judge the change instead of guessing from a description. The checklist below is the exact shot list.
- Photograph the bottle or bowl with the level marked, and again hours later
- Photograph today's droppings beside a coin for scale
- Photograph the chin and front paws, where drool and dampness show
- Photograph the urine patch in the litter tray
- Write down today's weight and the time you measured it
Likely causes
The causes vets consider first for this presentation are a bottle that is not delivering, dental pain, gut slowdown, and urinary tract disease. Most are manageable once identified, but they look similar from the outside, which is why a photo-based triage and, when needed, an exam matter more than guesswork.
A bottle that is not delivering
Airlocks, stuck valves and frozen spouts stop water silently. This is the first thing to rule out, and it takes ten seconds.
Dental pain
Rabbit teeth grow continuously, so a spur or overgrown molar can make drinking and chewing painful. Drooling and a wet chin are the clues.
Gut slowdown
Reduced drinking and reduced eating usually travel together, and gut stasis becomes an emergency at 8 to 12 hours.
Urinary tract disease
Bladder sludge, stones and infection all change drinking and urinating. Straining or gritty urine needs an exam.
Diet change
A rabbit switched onto wet greens genuinely drinks less from the bottle. The published intake range assumes a drier, hay-based diet.
Environment
Heat raises intake and a cold snap lowers it. A bowl placed where a nervous rabbit will not go is a common practical cause.
Safe home care
For mild cases, safe home care is offer both a bowl and a bottle, cleaned and refilled with fresh water, wet the greens you give, and keep unlimited grass hay available, and move the water to where your rabbit actually sits, not where it is convenient for you. These steps comfort and monitor; they do not treat the underlying cause. Stop home care and call a vet if anything in the urgent list above appears or the trend moves the wrong way.
- -Offer both a bowl and a bottle, cleaned and refilled with fresh water
- -Wet the greens you give, and keep unlimited grass hay available
- -Move the water to where your rabbit actually sits, not where it is convenient for you
- -Keep the room cool and shaded, since heat magnifies dehydration fast
- -Write down what goes in and what comes out, in millilitres and dropping counts
- -No syringing water into the mouth, which risks it going into the lungs. Fluids are a vet decision
PetLumen is a triage and monitoring tool, not a substitute for veterinary care. Always confirm treatment plans with a licensed veterinarian.
When it is not an emergency
Not every worrying sign needs an out-of-hours visit. These situations are usually safe to watch at home, as long as eating, drinking and droppings stay normal and nothing in the urgent list above appears.
- ●A rabbit eating large amounts of wet greens and fresh grass, drinking less from the bottle, and passing normal droppings
- ●Refusing a brand new bottle or bowl but drinking well from the old one
- ●Lower intake in cool weather with unchanged weight and droppings
- ●Drinking less for a few hours after a house move, then returning to normal
Frequently asked
How much water should a rabbit drink a day?
Published veterinary figures put it near 50 to 100 millilitres per kilogram of body weight a day, so roughly 100 to 200 millilitres for a 2 kilogram rabbit. Rabbits eating a lot of wet greens drink less from the bottle and that is fine.
Is a bowl better than a bottle?
Many rabbits drink more readily from an open bowl. Offering both, side by side, is the simplest way to tell whether the problem is the rabbit or the container.
My rabbit is not drinking and not eating. How urgent is that?
Urgent now. Refusing food with no droppings for 8 to 12 hours is treated as an emergency, and exotic specialists describe an even shorter 6 to 8 hour window off food.
Can I syringe water into my rabbit's mouth?
Do not. Water forced into a resistant rabbit can go into the lungs. Rehydration for a rabbit that will not drink means fluids from a vet.
Does not drinking cause gut stasis?
Dehydration dries gut contents and is one of the recognised contributors to gut slowdown, which is why intake and droppings are worth tracking together on the same note.
Related signs to watch
Sources
Every hour, temperature, weight and dollar range on this page traces to one of the veterinary references below. Where a number could not be traced to a named source, it was left out rather than estimated.
- -Textbook of Rabbit Medicine - the rabbit consultation and clinical techniques (PubMed Central)
- -MSD Veterinary Manual - Nutrition of Rabbits (professional version)
- -House Rabbit Society - When your rabbit stops eating
- -Veterinary Practice News - Ins and outs of bunny rabbit treatment and care, Dr Nicole Wyre, University of Pennsylvania
- -Veterinary Practice News - A guide to rabbit and rodent dentistry, Olivia A. Petritz DVM DACZM
Last edited 2026-09-22. First published 2026-09-22. Written by the PetLumen editorial team and not reviewed by a veterinarian.
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