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 must be continuously active: without food to stimulate it, the cecum slows down, bacteria ferment, gas accumulates and pain increases — which further suppresses appetite. This vicious cycle can lead to complete gastrointestinal stasis, one of the leading causes of death 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 the most frequent and most serious cause. 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.

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.