Rabbit not eating: what to do? Causes and emergencies explained

Why this is an emergency you cannot ignore

In rabbits, not eating is never trivial. The rabbit’s gut needs to stay active: without food to stimulate it, the cecum can slow down, bacteria ferment, gas accumulates and pain increases — which further suppresses appetite. This vicious cycle can lead to complete gastrointestinal stasis, a serious and sometimes fatal complication in pet rabbits.

Ground rule: any rabbit that has not eaten hay for more than 8 hours should be seen by a vet that same day.

Possible causes

Gastrointestinal stasis (GI stasis)

This is a frequent and serious cause of appetite loss. Gut motility slows or stops, often triggered by stress, a sudden dietary change, pain, or excessive hair ingestion during moulting. Associated signs: a tense and/or distended abdomen, few or no droppings, hunched posture, audible tooth grinding, lethargy. To understand the mechanism in detail and recognize all warning signs early, see our complete guide on rabbit GI stasis.

Dental pain

Rabbit teeth grow continuously. Malocclusion, dental spurs (sharp enamel points) or a dental abscess can make chewing painful and cause a gradual food refusal. Warning sign: the rabbit approaches its hay but walks away without eating.

Stress or environmental change

A move, a new animal in the home, a loud noise or a routine change can cause temporary anorexia. If appetite has not returned within 4–6 hours, seek veterinary advice.

If your rabbit has just changed living space, review our guide on cage versus pen setup to remove avoidable stress factors.

Sudden dietary change

A change of hay brand, pellets, or the introduction of a new vegetable can cause temporary refusal. Always make dietary transitions gradually over 10–14 days.

Gastrointestinal obstruction

Less common but serious: a hairball or foreign body can block gut transit. Warning sign: no droppings for more than 12 hours, very tight abdomen, rabbit prostrated.

Infection or fever

Rhinitis, a urinary infection, an abscess or any other inflammatory condition can suppress appetite. The rabbit may appear lethargic, with half-closed eyes and quickened breathing.

Signs of immediate life-threatening emergency

Contact an emergency vet without delay if you notice:

• No droppings for more than 12 hours
• Very distended and painful abdomen (the rabbit refuses to be touched)
• Acute pain posture: rabbit curled tightly on itself, audible tooth grinding, unable to stand
• Rapid or labored breathing
• Low body temperature (cold extremities, inert rabbit)
• Seizures or loss of balance

These signs indicate a life-threatening emergency that cannot wait until morning.

What you can do while waiting for the vet

These measures do not replace a consultation but can limit deterioration:

• Keep the rabbit warm (18–22 °C) without overheating
• Offer different types of hay to stimulate interest (change cut or brand)
• Offer fresh aromatic herbs (parsley, basil) to try to stimulate appetite
• Ensure constant access to water
• Encourage gentle movement: let the rabbit move around freely in a safe space (movement stimulates gut motility)
• Do not give human medications or unprescribed pain relief

Never massage the abdomen vigorously without veterinary instruction.

After the consultation: preventing a relapse

A rabbit recovering from stasis must be closely monitored for 48–72 hours:

• Check the quantity and appearance of droppings daily
• Keep hay available ad libitum at all times
• Avoid unnecessary stress during recovery
• Follow the prescribed treatment (prokinetics, pain relief, nutritional support)

For more on the balanced diet that prevents stasis, read our complete rabbit feeding guide and our article on daily hay amounts. If the refusal involves hay specifically, why has my rabbit stopped eating hay covers the most common causes and fixes. Note that a rabbit in pain may also become biting at the same time as it stops eating — if you notice both signals, read why does my rabbit bite. If your rabbit’s digestive issues show up as soft or liquid stools rather than food refusal alone, also read what to do if your rabbit has diarrhea.

Veterinary sources and caution notes

This article was reviewed to keep the advice cautious: it can help you recognise possible signs, but it does not replace an examination by a rabbit-savvy veterinarian. If you are unsure, or if your rabbit shows pain, lethargy, refusal to eat, abnormal breathing, or rapidly worsening signs, contact a veterinary clinic without delay.

Sources used to frame the recommendations:

• RSPCA — Rabbit health and welfare
• VCA Hospitals — Gastrointestinal stasis in rabbits
• VCA Hospitals — Dental disease in rabbits
• Merck Veterinary Manual — Digestive disorders of rabbits
• Merck Veterinary Manual — Viral diseases of rabbits
• WOAH — Rabbit haemorrhagic disease