A sick rabbit may not:

cry out

collapse immediately

or:

make obvious signs of distress.

Instead, you may notice that your rabbit:

leaves some hay

doesn't come running for food

produces fewer droppings

sits more quietly

moves less

or:

holds their body differently.

Merck notes that rabbits often hide signs of disease and that rapid veterinary care matters when illness is suspected.

That means one of the most important principles in rabbit care is:

Know your rabbit's normal—and treat meaningful changes seriously.

The biggest warning sign: eating less or stopping eating

For rabbits, appetite is not just:

one health signal among many.

It is one of the most important.

The Rabbit Welfare Association & Fund states very clearly that if appetite disappears or droppings stop:

contact a rabbit-savvy veterinarian immediately.

VCA similarly notes that even missing a meal should prompt concern and veterinary assessment.

A rabbit that stops eating can deteriorate:

rapidly.

Why is appetite so important in rabbits?

Rabbits have a digestive system designed for:

near-continuous intake of high-fibre food.

When food intake falls, gut movement can slow.

This can contribute to:

gastrointestinal stasis

or:

gut slowdown.

VCA warns that a rabbit that is not eating can progress from appearing mildly unwell to life-threatening illness within hours.

So:

A rabbit not eating is not equivalent to a dog skipping breakfast.

Species matters.

1. Eating less hay

A rabbit may still eat:

pellets

or:

treats

while reducing:

hay intake.

Do not assume that means everything is fine.

Reduced hay intake can be an early sign of:

dental pain

gastrointestinal discomfort

stress

systemic illness

or other problems.

Because hay is central to both:

gut motility

and:

dental wear,

changes in hay intake deserve attention.

2. Refusing favourite foods

Many guardians first realise something is wrong when their rabbit ignores:

greens

herbs

or:

a favourite treat.

That may indicate:

reduced appetite

even before the rabbit completely stops eating.

If a rabbit that normally rushes over for food suddenly shows:

little or no interest,

treat that as meaningful.

3. Fewer droppings

Droppings are one of the most important rabbit health indicators.

The RWAF notes that healthy rabbits produce large numbers of droppings every day and that:

smaller

fewer

darker

or:

misshapen droppings

can indicate a problem.

Do not only ask:

“Has my rabbit pooped?”

Ask:

“Are the droppings normal in size, number and appearance for this rabbit?”

4. No droppings

This is a major warning sign.

Merck lists:

no droppings for more than 12 hours

among signs requiring veterinary attention.

RWAF is more urgent in practical guidance:

If appetite goes and/or droppings stop, contact a veterinarian now.

The safest 1KAHU approach should therefore be:

EATING LESS + FEWER DROPPINGS = URGENT

NOT EATING + NO DROPPINGS = EMERGENCY / SAME-DAY URGENT CARE

Do not wait for a rigid clock threshold if the rabbit is already clearly unwell.

5. Smaller or abnormal droppings

Changes can include:

smaller pellets

dark pellets

misshapen pellets

droppings linked with hair

or:

reduced volume.

RWAF identifies these as possible signs of gut slowdown.

For 1KAHU, droppings should be treated as:

structured health data

not simply:

“normal / abnormal.”

6. Diarrhoea

True diarrhoea in rabbits deserves serious attention.

Merck lists diarrhoea among signs that should prompt veterinary contact.

Watery diarrhoea can result in:

fluid loss

weakness

and:

rapid deterioration.

In young rabbits especially, severe diarrhoea can be dangerous.

Do not confuse:

true watery diarrhoea

with:

uneaten caecotrophs.

That distinction may be useful to discuss with a rabbit-experienced veterinarian.

7. Hunched posture

A rabbit sitting:

hunched

tense

or:

unusually still

may be in pain.

Merck specifically lists a hunched posture as a possible sign of pain or illness in rabbits.

This may occur with:

gastrointestinal discomfort

urinary disease

dental pain

or other conditions.

A rabbit that normally stretches out comfortably but suddenly sits tightly hunched should not be ignored.

8. Tooth grinding

Rabbits can make different tooth sounds.

Soft tooth purring can occur during:

relaxation.

But loud or repeated tooth grinding can indicate:

pain.

Merck specifically identifies tooth grinding alongside hunched posture as a sign of pain or illness.

Context matters.

9. Reduced activity

Watch for:

less hopping

remaining in one place

reluctance to explore

not approaching for food

or:

staying unusually still.

Merck includes:

loss of energy

and:

not hopping or moving normally

among signs requiring veterinary attention.

For rabbits:

“quiet” should not always be interpreted as “relaxed.”

10. Weakness or collapse

A rabbit that:

cannot stand normally

appears extremely weak

or:

collapses

requires urgent veterinary care.

RWAF classifies collapse as an emergency and advises careful transport because spinal injury may sometimes be involved.

COLLAPSE = EMERGENCY

11. Trouble breathing

Breathing difficulty is always concerning.

Possible signs include:

rapid breathing

laboured breathing

pronounced body movement while breathing

nasal flaring

or:

mouth breathing.

Merck lists breathing difficulty among signs requiring immediate veterinary attention.

Mouth breathing is especially serious

Rabbits are:

obligate nasal breathers under normal conditions.

RWAF states that mouth breathing indicates severe distress and requires immediate veterinary care.

MOUTH BREATHING = EMERGENCY

Do not wait to see if it settles.

12. Sneezing or nasal discharge

Rabbit respiratory disease can cause:

sneezing

nasal discharge

eye discharge

reduced appetite

and:

low energy.

Merck describes respiratory disease such as rhinitis and pasteurellosis as potentially causing watery or mucus-like nasal/eye discharge, coughing, sneezing and more serious respiratory complications.

Persistent discharge deserves veterinary assessment.

13. Eye discharge

Eye discharge can be associated with:

respiratory disease

dental disease

tear-duct problems

injury

or other causes.

Merck includes secretions from the eyes or nose among signs of illness in rabbits.

A continuously wet or crusted eye should not be ignored.

14. Drooling or a wet chin

Drooling can be a particularly important rabbit sign.

Merck lists:

drooling

among signs of illness.

VCA notes that dental disease may appear as:

slobbering

or:

matted/discoloured fur around the mouth or under the chin.

Other signs of dental trouble can include:

selective eating

dropping food

eating slowly

or:

avoiding hay.

15. Weight loss

Weight loss may be difficult to spot visually in a rabbit with:

dense fur.

Regular weighing can reveal:

gradual change

before it becomes obvious.

VCA states that unexplained weight loss warrants prompt attention from a rabbit-savvy veterinarian.

Possible causes include:

dental disease

chronic gastrointestinal disease

kidney/liver disease

pain

cancer

and other illnesses.

16. Changes in drinking

Watch for:

drinking markedly more

or:

drinking much less.

Water is important for normal gastrointestinal function.

RWAF notes that adequate hydration helps keep digestive contents moving and that dehydration can worsen gut slowdown.

Persistent thirst changes should be discussed with a veterinarian.

17. Changes in urination

Possible warning signs include:

straining

frequent attempts

blood

very dark urine

urine scald

or:

changes in volume.

Merck includes dark red urine among signs that may indicate illness and warrant veterinary attention.

Rabbit urine can naturally vary in colour, so:

colour alone should not be used to diagnose urinary disease.

Look at the whole picture:

straining + discomfort + reduced appetite + urine change

is more important than colour alone.

18. Dirty or wet hindquarters

Soiling around the back end can reflect:

diarrhoea

uneaten caecotrophs

urinary problems

obesity

mobility problems

or:

dental disease interfering with grooming.

A dirty hind end is also important because contaminated fur can increase the risk of:

skin damage

and:

flystrike in relevant environments.

It warrants investigation rather than simply cleaning the rabbit repeatedly.

19. Reduced grooming

A sick or painful rabbit may groom less.

Watch for:

unkempt fur

matting

dirty hindquarters

or:

reduced normal self-care.

This may accompany:

pain

mobility problems

or:

general illness.

20. Hair loss or red skin

Merck lists:

fur loss

and:

red, swollen skin

among signs of rabbit illness.

Potential causes include:

parasites

infection

trauma

overgrooming

or other dermatological problems.

Appearance alone cannot identify the cause.

21. Head tilt

Head tilt deserves prompt attention.

Possible underlying causes include:

ear disease

neurological disease

and other conditions.

VCA specifically states that neurological imbalance or head tilt requires immediate attention.

NEW HEAD TILT = URGENT VETERINARY ASSESSMENT

22. Loss of balance

Watch for:

falling

rolling

circling

difficulty standing

or:

abnormal head position.

Neurological signs should be assessed promptly by a veterinarian.

A rabbit may injure themselves further if disoriented, so safe transport matters.

23. Limping or abnormal movement

Merck lists:

not hopping or moving normally

among signs requiring veterinary contact.

Possible causes include:

injury

fracture

arthritis

pododermatitis

neurological disease

or:

pain.

Sudden loss of limb function or suspected fracture requires urgent care.

24. Broken bone or major injury

RWAF specifically classifies fractures as emergencies because rabbits need:

rapid pain relief

and can deteriorate further through:

stress

and:

gut slowdown.

Handle carefully and minimise movement during transport.

25. Swollen abdomen

A visibly distended or painful abdomen can occur with serious gastrointestinal problems.

If this happens together with:

not eating

no droppings

pain

weakness

or:

rapid deterioration

seek urgent veterinary care.

This is not a situation for home treatment.

26. Sudden behavioural change

A rabbit that suddenly becomes:

withdrawn

aggressive

less social

reluctant to be touched

or:

unusually still

may be:

frightened

stressed

in pain

or:

unwell.

Behaviour should be considered alongside:

appetite

droppings

movement

and:

posture.

27. A rabbit that stops coming for food

This is such a common early clue that it deserves special emphasis.

Many rabbits have:

very predictable food routines.

If your rabbit usually runs over when:

the hay is refreshed

or:

greens arrive

and suddenly does not:

that change itself is health information.

Do not wait until the rabbit refuses all food.

28. Temperature abnormalities

Merck lists temperatures below:

38°C / 100.4°F

or above:

40.6°C / 105°F

as signs requiring veterinary attention.

However, 1KAHU should not encourage inexperienced guardians to routinely take rectal temperatures at home unless their veterinarian has specifically taught them how.

Handling can be stressful and rabbits can injure themselves if restrained incorrectly.

Use temperature values primarily as:

professional/veterinary data

rather than a universal home-monitoring instruction.

29. “My rabbit is just quieter than usual”

This should never be dismissed automatically.

Because rabbits can hide illness, a subtle shift such as:

not exploring

not approaching

sitting alone

or:

not stretching out comfortably

may be an early clue.

The most useful question is:

What else changed at the same time?

Appetite?

Droppings?

Posture?

Breathing?

Movement?

Urination?

Gastrointestinal stasis: an important concept, not a home diagnosis

Guardians often hear the term:

GI stasis.

It describes a serious reduction in normal gastrointestinal movement.

But 1KAHU should avoid presenting:

“not eating = GI stasis”

as a guaranteed diagnosis.

Why?

Because reduced appetite and gut slowdown may occur secondary to:

dental pain

obstruction

systemic disease

stress

pain

and other conditions.

The safest language is:

Loss of appetite and reduced droppings can indicate gastrointestinal slowdown and require prompt veterinary assessment to determine the cause.

Merck and VCA both emphasise prompt care when rabbits stop eating or produce fewer droppings.

Do not give gut motility drugs without veterinary assessment

This should be a strong safety box.

RWAF warns against administering gut motility medication before veterinary examination because:

if an obstruction is present, stimulating the gut can be dangerous.

Therefore:

Do not use leftover gut-motility medication simply because your rabbit has stopped eating.

The cause needs assessment first.

Do not automatically syringe-feed a rabbit who has stopped eating

This is another important safety rule.

Nutritional support can be part of rabbit treatment, but:

syringe feeding should not automatically happen before obstruction or other serious causes have been assessed.

If the rabbit is not eating:

contact a rabbit-experienced veterinarian promptly.

This aligns with the caution established in our earlier rabbit health content.

When should I contact a veterinarian?

For rabbits, the threshold should generally be:

lower than for many dogs or cats.

Contact a rabbit-experienced veterinarian promptly if:

• appetite is reduced;
• hay intake decreases noticeably;
• droppings become fewer or smaller;
• weight decreases;
• your rabbit becomes unusually quiet;
• movement changes;
• drooling appears;
• eye or nasal discharge develops;
• urinary behaviour changes;
• skin or coat changes persist;
• head position changes;
• your rabbit appears painful.

Merck advises veterinary contact for appetite loss, reduced energy, drooling, breathing problems, diarrhoea, no droppings and abnormal movement.

When is it an emergency?

Seek urgent veterinary care if your rabbit:

STOPS EATING

RWAF treats appetite loss as an emergency requiring immediate veterinary attention.

STOPS PRODUCING DROPPINGS

Especially if combined with appetite loss or pain.

HAS MOUTH OR LABOURED BREATHING

Mouth breathing indicates severe distress.

COLLAPSES

Collapse requires emergency assessment.

HAS SEVERE DIARRHOEA

Especially with weakness or dehydration.

DEVELOPS A NEW HEAD TILT OR SEVERE LOSS OF BALANCE

Neurological signs require immediate attention.

SUFFERS A FRACTURE OR MAJOR TRAUMA

Urgent pain relief and stabilisation are needed.

HAS A PAINFUL OR SWOLLEN ABDOMEN

Particularly with reduced appetite or no droppings.

MAY HAVE INGESTED A TOXIN OR FOREIGN OBJECT

Do not wait for symptoms to worsen.

IS RAPIDLY DETERIORATING

A rabbit that becomes significantly more unwell over hours needs urgent care.

Young rabbits need extra caution

Young rabbits can deteriorate quickly.

Diarrhoea, reduced appetite, dehydration and infectious or parasitic disease may become serious rapidly.

Do not use a:

“wait and see for a couple of days”

approach when a young rabbit has:

watery diarrhoea

appetite loss

lethargy

or:

rapid deterioration.

Senior rabbits need careful monitoring

As rabbits age, they may develop:

dental disease

arthritis

kidney disease

mobility problems

and other chronic conditions.

Signs may initially appear as:

reduced hay intake

weight loss

less jumping

difficulty grooming

dirty hindquarters

or:

behaviour changes.

Do not simply label these:

“old age.”

Bonded rabbits can help reveal change

Rabbit companions can sometimes provide useful context.

If two bonded rabbits normally:

eat together

rest together

and:

interact frequently

but one begins:

withdrawing

eating less

or:

staying apart,

that can be meaningful.

For 1KAHU, household and bonded-companion context could eventually become useful structured information.

What should I monitor every day?

Rabbit health monitoring should be:

simple + routine.

EATING

Hay intake Greens Pellets Favourite foods

DROPPINGS

Number/amount Size Shape Consistency

WATER

Normal intake pattern?

URINATION

Normal frequency and appearance?

ACTIVITY

Moving normally? Exploring?

POSTURE

Relaxed? Hunched?

BEHAVIOUR

Normal interaction? Quieter?

GROOMING

Normal?

BREATHING

Quiet and comfortable?

EYES / NOSE

Any discharge?

MOUTH / CHIN

Any drooling or wet fur?

WEIGHT

Stable?

This becomes:

My Rabbit's Normal

Baseline droppings are especially important

For rabbits, the equivalent of a dog's:

weight trend

or a cat's:

litter-tray pattern

may be:

droppings + hay intake.

1KAHU should allow guardians to build a visual understanding of:

NORMAL FOR COCO

Dropping size Dropping shape Typical daily volume Hay appetite

Then surface:

CHANGE FROM NORMAL

Droppings smaller than Coco's usual baseline for 2 consecutive observations.

That is far more useful than:

“Rabbit poop abnormal.”

What should I tell the veterinarian?

Useful information includes:

When did appetite change?

Is your rabbit still eating hay?

Any favourite foods refused?

When were normal droppings last seen?

Are droppings smaller or fewer?

Any diarrhoea?

Any tooth grinding?

Is the rabbit hunched?

Are they moving normally?

Any drooling?

Any eye or nasal discharge?

Any urinary change?

Any recent diet change?

Any possible toxin or foreign-body exposure?

Any recent stress?

Any dental history?

Current medication?

Recent weight?

RWAF also recommends bringing practical context such as recent diet and droppings information to a veterinary assessment.

Common misconceptions

“My rabbit is still eating treats, so their appetite is fine.”

Not necessarily.

Reduced hay intake can still be significant.

“I'll wait until tomorrow if my rabbit stops eating.”

Do not.

RWAF advises immediate veterinary assessment when appetite stops or droppings cease.

“No droppings just means constipation.”

Not necessarily.

Reduced or absent droppings can indicate serious gastrointestinal slowdown or obstruction.

“A rabbit sitting quietly is probably relaxed.”

Maybe—but a hunched, unusually still rabbit may be painful or unwell.

“Hair in droppings means there's a hairball.”

Not necessarily.

Rabbits normally ingest fur during grooming, and true obstructive hairballs are less common than is sometimes assumed. Merck notes that serious true hairball obstruction is uncommon but possible.

“I'll give pineapple juice for gut stasis.”

RWAF specifically advises against this approach; it does not solve the underlying problem and high sugar content can be unhelpful.

“I'll use leftover gut motility medicine.”

Do not without veterinary assessment because obstruction needs to be ruled out.

“I'll syringe-feed immediately.”

Do not automatically syringe-feed before serious causes such as obstruction have been considered by a veterinarian.

“Red urine always means blood.”

Rabbit urine colour can vary. The important context is whether there is actual bleeding, straining, pain or other changes.

“My rabbit is old, so moving less is normal.”

Age does not rule out treatable pain or disease.

“Mouth breathing is just stress.”

No.

Mouth breathing in a rabbit indicates severe distress and requires urgent veterinary care.

Key Facts

Rabbits often hide illness, so subtle changes can be important.

Reduced appetite or loss of appetite requires prompt attention.

Fewer, smaller or absent droppings can indicate serious gastrointestinal problems.

A rabbit that stops eating can deteriorate within hours.

Hunched posture and tooth grinding can indicate pain.

Drooling or a wet chin can be associated with dental disease.

Loss of energy or abnormal movement warrants veterinary attention.

New head tilt or neurological imbalance needs urgent assessment.

Difficulty breathing is serious; mouth breathing is an emergency.

Do not give gut motility medication without veterinary assessment when obstruction has not been ruled out.

Frequently Asked Questions

How can I tell if my rabbit is sick?

Watch for changes in eating, hay intake, droppings, activity, posture, grooming, weight, breathing, movement, urine, eye/nose discharge and behaviour. Rabbits can hide illness, so subtle changes matter.

What is the first sign that a rabbit may be unwell?

Reduced appetite or reduced hay intake is one of the most important early warning signs, especially if droppings become smaller or fewer.

My rabbit missed one meal. Should I worry?

Yes. VCA advises that even missing one meal should prompt concern and veterinary assessment because appetite loss can rapidly become serious in rabbits.

My rabbit isn't eating. Is it an emergency?

Yes. Loss of appetite in a rabbit should be treated urgently. RWAF advises immediate veterinary care rather than waiting until the next day.

My rabbit is eating pellets but not hay. Is that okay?

No change in hay intake should be ignored. Selective eating may reflect dental pain, gastrointestinal discomfort or other illness and deserves veterinary attention if it persists.

Why are my rabbit's droppings smaller?

Smaller or fewer droppings can occur when gastrointestinal movement slows. If this occurs with reduced appetite, contact a veterinarian promptly.

My rabbit hasn't pooped. What should I do?

Contact a rabbit-experienced veterinarian urgently, especially if appetite is reduced or absent.

Is diarrhoea serious in rabbits?

It can be. True watery diarrhoea warrants prompt veterinary assessment, particularly in young rabbits or when weakness or dehydration is present.

Why is my rabbit sitting hunched?

A hunched posture can indicate pain or illness.

Why is my rabbit grinding their teeth?

Gentle tooth purring can occur when relaxed, but louder persistent grinding can indicate pain. Context matters.

Why is my rabbit drooling?

Drooling may be associated with dental disease or other oral problems and should be assessed by a veterinarian.

Why has my rabbit stopped hopping normally?

Pain, injury, neurological disease or other illness can alter normal movement. Merck identifies abnormal movement as a sign requiring veterinary contact.

Is head tilt an emergency?

A new head tilt or neurological imbalance requires prompt veterinary assessment.

My rabbit is breathing with their mouth open. What should I do?

Seek emergency veterinary care immediately. Mouth breathing indicates severe distress.

Can I treat GI stasis at home?

Do not assume reduced appetite is simply GI stasis or treat blindly at home. Veterinary examination is needed to identify the cause and rule out problems such as obstruction.

Can I give gut motility medicine I already have?

Not without veterinary advice. If an obstruction is present, inappropriate motility medication can be dangerous.

Should I syringe-feed a rabbit who isn't eating?

Not automatically. Nutritional support can be important, but a veterinarian should first consider whether obstruction or another serious condition is present.

Why is my rabbit drinking more?

Persistent changes in drinking can accompany urinary, renal, metabolic or other disease and warrant veterinary assessment when unexplained.

Can rabbits hide pain?

Yes. Rabbits commonly hide signs of disease and may show pain through reduced appetite, hunched posture, tooth grinding, withdrawal or reduced movement.

When should I take my rabbit to an emergency vet?

Urgent signs include stopping eating or producing droppings, mouth/laboured breathing, collapse, severe diarrhoea, major trauma, head tilt with severe imbalance, suspected obstruction/toxin exposure, or rapid deterioration.