Rabbit gut sounds and droppings: catching stasis early, and telling it from a blockage

Quick answer

A daily hands on check is how stasis gets caught before the rabbit goes quiet. By the time a rabbit is hunched in a corner, the problem has been running for hours.

A rabbit's gut is never meant to be still. It is a continuous flow system, and when it slows the gas producing bacteria in the caecum keep working while nothing moves the gas along. That is why a rabbit that stops eating deteriorates over hours rather than days.

Two things at home tell you the gut is working: the sounds it makes, and the droppings that come out of it. Both change before the rabbit looks ill, and both are simple to check if you know your own rabbit's baseline.

• Listen to both flanks daily with an ear against the side or a cheap stethoscope. Learn what your rabbit sounds like when it is well.
• Count and look at droppings every morning. Smaller, fewer, drier or absent all mean the same thing.
• Silence in the abdomen is a red flag. So is a loud, tight, drum like sound.
• A rabbit that has not eaten for several hours needs veterinary care the same day. Overnight is too long.
• The critical decision is stasis versus obstruction, because the treatment for one is dangerous in the other.

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Gut stasis and gut obstruction look similar at first and are treated completely differently.

Stasis is a slowdown, usually with a build up of gas, usually with some history of the rabbit being slightly off for a day or two. Obstruction is a physical blockage, usually sudden, in a rabbit that was completely well an hour before, with severe pain, a tight distended abdomen, complete absence of droppings and often a rabbit that feels cold to the touch.

Drugs that stimulate gut movement, and syringe feeding a large volume, are standard care for stasis and are dangerous in an obstruction because they push against a closed pipe. This is why the answer to a suspected blockage is a vet with an x ray, not a home remedy. Never start motility drugs or force feeding on your own judgement in a rabbit that has gone from normal to severely painful within a few hours.
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Decide in 60 seconds

Why a rabbit gut cannot afford to stop

A rabbit takes in a continuous stream of high fibre plant material. The indigestible long fibre in that stream is what physically keeps the gut wall moving, and it exits as the round dry droppings you see. The fine, fermentable fraction is diverted into the caecum, where a bacterial population breaks it down and produces the nutrient rich caecotrophs the rabbit re-ingests directly from the anus.

That means two things. First, motility depends on fibre intake, so a rabbit eating pellets and vegetables but little hay is already running at reduced motility before anything goes wrong. Second, the caecal bacteria carry on regardless. When flow stops, gas accumulates with nowhere to go, the stomach and caecum distend, distension causes pain, pain further suppresses motility, and the loop closes.

Dehydration compounds it. Stomach contents that are not moved along lose water to the gut wall and compact into a firm mass, which is harder to shift than the same material was a few hours earlier.

At the same time the rabbit stops eating, which means it stops taking in energy. Rabbits mobilise fat quickly and their livers cope with that badly, so a period of anorexia measured in a day or two can produce liver damage on top of the original problem. This is why the response is measured in hours and why an overweight or a pregnant rabbit is at greater risk than a lean one.

Finally, stasis is a symptom rather than a diagnosis. Something caused it: a painful tooth spur, a bladder stone, arthritis, an ear infection, a stressful event, a hot day, a diet change, a sore hock, or a physical obstruction. The vet treats the stasis and then looks for the cause, and the rabbits that relapse are the ones where the cause was never found.

How to listen to a rabbit's abdomen

Keep the scale and the log in the same place, and use them on the same schedule. Weight, dropping count and gut sounds together tell you far more than any one of them alone.

You do not need to be able to interpret this like a clinician. You only need to know what your own rabbit normally sounds like, so that you notice when it does not.

Where to listen. Both flanks, behind the ribcage and forward of the hips, and low on the belly. The caecum sits on the rabbit's right and lower left, and the stomach sits high under the ribs on the left. Sounds differ between sites, which is why you check both sides.

How to listen. Sit the rabbit on your lap or on a non slip surface at floor level so it does not struggle. Press an ear gently against the flank, or use an inexpensive stethoscope. Choose a quiet room and a quiet time of day.

How long. Give each site a full slow count of thirty or more. Rabbit gut sounds are intermittent, and a five second listen tells you nothing.

What normal sounds like. Irregular gurgling, rumbling and trickling, coming and going, with quiet gaps in between. The technical name is borborygmi. A rabbit that has just eaten is noisier than one that is dozing.

What quiet means. Long stretches with no sound at all on both sides, in a rabbit that would normally be noisy, is the sound of a gut that has stopped. That is a same day veterinary call.

What loud and tight means. High pitched pinging or a hollow drum note, especially over a flank that looks fuller than the other, suggests gas under tension. Tapping gently on one side while listening on the other can produce that ping. A tympanic abdomen in a painful rabbit is an emergency.

What continuous loud rushing means. Very loud, constant, splashy sounds with diarrhoea point to enteritis rather than stasis and are equally urgent.

Build the baseline while the rabbit is well. Listen twice a week for a month when nothing is wrong. The value of this check is entirely in knowing the difference from normal, and you cannot learn that during an emergency.

Reading the droppings

Droppings are the most reliable home measure of gut motility, because they are the physical output of it.

Normal. Round, evenly sized, dry, fibrous, breaking open to show visible plant fibre, and produced in large numbers every day. Size varies by rabbit, so yours is the reference.

Getting smaller. The first change in most cases. The rabbit is still producing droppings but they are noticeably smaller than usual. Act at this point rather than waiting for them to stop.

Fewer, then none. The count falling over a day, then stopping. A rabbit that has produced nothing for several hours is in trouble.

Strung together with fur. A row of droppings linked by hair, sometimes called a string of pearls. It means the rabbit is ingesting fur, usually during a moult or from overgrooming, and that fur is binding the gut contents. Common in long coated breeds and in rabbits under stress.

Coated in clear jelly. Mucus around droppings suggests the gut lining is irritated. Take it seriously, particularly with any other sign.

Soft, unformed, stuck to the bottom. These are usually uneaten caecotrophs rather than diarrhoea, and they point to a diet with too much starch and sugar and not enough hay, or to a rabbit that cannot physically reach its anus because of obesity, arthritis or dental pain.

Genuinely watery diarrhoea. Uncommon in adult rabbits and an emergency when it occurs. In young rabbits it is a life threatening presentation and should be treated as urgent immediately.

What changes the picture

Coat and breed. Angora and other long coated rabbits ingest far more fur, so fur bound gut contents are a recurring risk and grooming during a moult is a genuine preventive measure. Lop breeds have a higher rate of dental and ear disease, both of which cause the pain that triggers stasis.

Age. Young rabbits are vulnerable to enteritis and to diet changes. Older rabbits accumulate dental disease, arthritis and kidney problems, all of which can present first as reduced appetite.

Body condition. Overweight rabbits are worse at reaching caecotrophs, worse at tolerating a period of anorexia, and harder to assess by feel.

Season. Moulting seasons increase fur ingestion. Hot weather reduces appetite and increases dehydration, and heat stress in a rabbit is its own emergency. Cold and damp increase arthritis pain, which reduces movement and food intake.

Recent events. Anaesthesia, a car journey, a new pet, building work, a bonding attempt gone wrong, a firework night, or a change of hay supplier can all precede stasis by a day.

Medication. Several antibiotic classes, particularly oral penicillins and lincosamides, destroy the caecal bacterial population and cause fatal enterotoxaemia in rabbits. Never give a rabbit an antibiotic prescribed for another animal or person, and always tell any prescriber that the patient is a rabbit.

What healthy looks like, so you notice the change

A well rabbit is bright eyed, alert and interested in food it did not ask for. Offer a favourite fresh herb: a rabbit that ignores it is telling you something.

A healthy rabbit eats almost continuously, chews hay audibly, moves around its space, sits with its body relaxed and its front feet forward, and reacts to the sound of food being prepared.

A rabbit in early gut trouble sits still with its feet tucked under it, holds its ears differently, presses its belly against the floor, grinds its teeth quietly and repeatedly, and stops responding to food. Loud tooth grinding in a rabbit is a pain sign, not contentment, and it is different from the soft chattering of a relaxed rabbit being stroked.

Because rabbits are prey animals, they suppress all of this in front of you. Watch from a distance, or on a camera, before you go in.

The routine that catches problems early

What never to do

Do not wait until morning. Rabbit gut emergencies run overnight, and the difference between an evening appointment and the next day is frequently the difference in outcome.

Do not give motility drugs, painkillers or antibiotics left over from a previous illness or belonging to another animal. Several are lethal to rabbits and motility drugs are dangerous in a blockage.

Do not force large volumes of food or fluid into a rabbit with a tight, painful, distended abdomen.

Do not withhold hay to rest the gut. Fibre is the treatment, not the problem.

Do not put a rabbit in a hot car or a warm room to comfort it. Heat makes everything worse.

Do not assume a rabbit that eats a treat is fine. Rabbits will take a favourite food when they are refusing hay, and hay refusal is the meaningful sign.

Do not treat sticky caecotrophs as diarrhoea and cut vegetables entirely. Look at the hay proportion instead.

What the vet will want

When to get help

Go the same day for reduced or absent droppings, reduced appetite, hunched posture, tooth grinding, or a quiet abdomen.

Go immediately, and say on the phone that you suspect a blockage, for a rabbit that was well an hour ago and is now in severe pain with a tight abdomen, no droppings and cold ears.

Go immediately for watery diarrhoea, for a rabbit that cannot stand, or for one that has become unresponsive.

While you travel, keep the rabbit at a comfortable temperature, keep it with its bonded companion if you have one, take your dropping photos and your log, and do not attempt to treat on the way.

Recovery looks like a rabbit that goes back to hay and starts producing normal droppings again. Keep logging for a fortnight afterwards, because relapse is common when the original cause has not been found.