Rabbit not eating: why every hour counts

The hay is untouched, there are fewer pellets in the tray than usual, and your rabbit sits hunched in the corner. With a dog you would wait until tomorrow morning and see whether it passes. With a rabbit you must not.

I am often asked whether I “do small pets too”. The answer is yes — and with rabbits of all animals, the one thing I most urgently want to pass on is not holistic but entirely sober: a rabbit that is not eating is an emergency. Not a cause for concern, not a “let’s see how it looks tomorrow”. An emergency.

That sounds dramatic. But it is simply anatomy.

Why “not hungry today” does not exist in a rabbit

A rabbit digests differently from a dog or a cat. Its digestive tract is built on fibre-rich food constantly arriving at the top — that is the drive keeping everything moving. A rabbit does not eat three meals a day. It eats almost continuously.

If that supply stops, the gut slows down. In a stalled gut, gas builds up; the gas stretches and hurts; the pain takes away the rabbit’s last remaining appetite — and so the drive is missing even more. This is not a state that resolves overnight. It is a spiral, and it turns downwards.

On top of that: a rabbit cannot vomit. Whatever is in has to go through. And the animal cannot make itself heard the way a dog would. Rabbits are prey animals. In the wild an animal that visibly suffers is a dead animal — so they show nothing for as long as they possibly can.

For cats I write in my article when your cat will not eat about a 24-hour rule. In a rabbit the window is only half as wide, and I am glad of everyone who knows it.

The clock hardly anyone knows about

As a rule of thumb: twelve hours without food intake belongs at the vet. Many veterinary emergency services set the threshold lower still and advise it after just three to six hours — not out of over-caution, but because in that window almost everything can still be saved and less and less afterwards. The British emergency service Vets Now puts it as plainly as I would.

How serious this is can be seen in an analysis of 6,349 rabbits from 107 English veterinary practices: among the most commonly documented causes of death were anorexia at 4.9 per cent and gut stasis at 4.3 per cent. Translated: in rabbits, “not eating” and “gut has stopped” are not marginal symptoms. In the statistics they stand where tumours and organ failure stand for other species.

Look in the litter tray, not in the bowl

The bowl deceives. Perhaps your rabbit nibbled a little in secret, perhaps its companion ate some. What does not deceive is what comes out at the other end.

Really examine the pellets. Not just “are there any”, but:

• How many? Markedly fewer than usual is an alarm sign.
• How big? Pellets getting smaller show that less is passing through.
• How firm? Very dry and hard means the gut contents are standing too long.
• Are they linked together? Pellets strung together on hair need discussing.
• None at all any more? Then this is no longer an early sign but a late one.

One point that often causes confusion: what you are looking at is food digested hours ago. The pellets tell you how the gut was doing earlier . They are therefore a good early warning — but no proof that things are still going well right now.

Also watch for: sitting hunched with the belly drawn up, fine teeth grinding (not the contented grinding but a dry crunching), a hard or distended belly, straining without result, cold ears, and whether it is drinking.

Pain is written in the face

In 2012 a research group around Stephanie Keating at Newcastle University systematically studied how a rabbit’s face changes under pain, and from it developed the Rabbit Grimace Scale . At its core there are five features:

• The eyes look squeezed shut rather than round and open.
• The cheeks appear flatter, the face narrower.
• The nose tapers more sharply, the V between the nostrils changes.
• The whiskers stand more stiffly forward or hang down instead of resting relaxed to the side.
• The ears lie closer to the body and rotate backwards.

I find this work important for a particular reason: it proves that what attentive owners intuitively call “somehow different” really is measurable. Your gut feeling that your rabbit is wearing an unfamiliar face today is not imagination. It is a finding.

And conversely it means: if a rabbit obviously looks ill, it has not been ill for an hour.

The most common cause is one you cannot see

Rabbit teeth grow throughout life. They do not get shorter with age but by wearing against each other — and that wear comes from hours of chewing hay and roughage. Feed little hay and much soft food and you take the teeth’s work away. Then spurs and sharp edges form that cut into the tongue or the cheek.

How common this is can be seen in an analysis of the treatment records of 161,979 rabbits in British veterinary practices: in 15.36 per cent a dental disease was found within a year — roughly one animal in seven. What matters is where: 13.72 per cent involved the cheek teeth, only 3.14 per cent the incisors.

That is the real point. You can look at the incisors at the front yourself by gently lifting the lip. The cheek teeth far back in the mouth you cannot see — that takes light, special instruments and, for a thorough look, usually sedation. So “the teeth look fine at the front” means practically nothing.

A follow-up analysis of 2,219 rabbits with dental disease also looked at what had drawn attention to it in the first place. By far the most commonly documented sign was reduced food intake (25.1 per cent), followed by reduced droppings (10.9 per cent). Exactly the two things you can see at home.

When it is not the teeth

Then a whole range of possibilities remains, and they all pass through the same bottleneck: pain or stress slows the gut.

• Pain somewhere else — urinary tract, back, an inflamed ear, a sore pad.
• Stress and change — a move, a new animal, the loss of a companion, building work, constant noise.
• Heat — rabbits suffer from about 25 degrees, and heat stress often shows first as loss of appetite.
• Feeding mistakes — too little hay, too much grain or pellets, too abrupt a change.
• Something swallowed — carpet fibres, bedding, plastic.

One distinction matters so much that I write it out separately here: a stalled gut and a true obstruction look almost identical to you at home but demand completely different treatment. An obstruction usually starts abruptly, causes very severe pain, droppings stop entirely, and the animal quickly becomes cold and unresponsive. That is a surgical emergency in which hours count.

Which of the two it is, nobody decides by looking. That takes palpation, usually an X-ray, sometimes blood values. And that is exactly why treating a rabbit yourself is so risky — the obvious help is right for one cause and dangerous for the other.

What you can do in the first hours — and what you cannot

Do this:

• Phone the practice instead of watching. In the evening too. Even if it feels excessive.
• Keep your rabbit warm and quiet. If the ears feel cold, say so on the phone — that changes the urgency.
• Offer what it likes best: fresh hay, favourite herbs, dampened greens. Offer, do not press.
• Make sure water is within reach — rabbits usually drink better from a bowl than from a bottle.
• Take notes: when was the last meal you are sure of? When the last normal pellet? What has changed in the last few days? That saves real time at the practice.

Do not do this:

• No force-feeding without consulting first. With an obstruction it makes things worse. The advice is in every forum — it still belongs in professional hands.
• Do not massage or “stroke out” the belly. With a gas-filled or obstructed gut that can do serious harm.
• No painkillers or antispasmodics from the medicine cupboard. Much that humans or dogs tolerate, rabbits do not.
• Do not wait until morning. That is the most common and the most expensive mistake.

Where my perspective comes in

I am a veterinarian, and with an acute case I am unromantic: it needs examining, X-raying and treating conventionally. There is nothing to discuss there, and anything else would be negligent in that situation.

It gets interesting afterwards. Because a rabbit whose gut once stopped usually did not stop eating by chance. Then I ask the questions there was no room for in the emergency: what is the fibre intake really — not what is bought, but what is eaten? How much movement does the animal get in a day? What about supply at cell level, which is almost never considered in small pets? What does the group look like, who is putting pressure on whom? What has changed in the surroundings that is trivial to us and not to a prey animal?

At heart I treat a rabbit no differently from a dog or a horse. The questions are the same, only the time windows are shorter and the signs quieter. As for the interplay of conventional medicine and a holistic view , the same applies to small pets as everywhere: first the one, then the other — never the one instead of the other.

What I would like to leave you with

Rabbits are not small dogs. Nor are they a beginner’s animal, even though they are often sold as one. They are animals with a sensitive, continuously working digestive system and a built-in tendency to hide their symptoms.

If you take one single thing from this article, let it be this: count the pellets, not the strands of hay. Anyone who glances into the litter tray daily notices the change one or two days earlier than someone who looks at the bowl. In an animal with a window of hours, those are the decisive days.