Ileus (Gastrointestinal Stasis) in Rabbits

Ileus, also called gastrointestinal (GI) stasis, is one of the most common and serious medical problems seen in pet rabbits. Under normal conditions, coordinated muscle contractions move food through the digestive tract. When these contractions slow or stop, ileus occurs.

Ileus is not a disease itself. It is a sign of an underlying problem. Unless the primary cause is identified and addressed, ileus can recur or become chronic.

Common underlying causes include:

• Pain (especially dental disease)
• Stress
• Poor diet
• Illness or infection
• Any condition that causes decreased appetite or discomfort

Diagnostic testing is often needed either at the time of treatment or once the rabbit is stable to identify the root cause.

Signs of Ileus

The earliest and most important signs include:

• Decreased fecal output or no feces
• Very small fecal pellets
• Feces covered in mucus (a sign of intestinal inflammation)

Other common signs:

• Decreased or absent appetite
• Lethargy
• Hunched posture
• Teeth grinding due to pain
• Low body temperature (normal is 101–103°F)
• Loud gurgling intestinal sounds or no gut sounds at all

Any rabbit that stops eating or producing feces for 12 hours is experiencing an emergency. GI stasis can progress rapidly and may become life-threatening.

Ileus vs. Obstruction

Ileus can be:

• A medical condition, or
• A surgical emergency if there is a true intestinal obstruction

Obstruction is often associated with:

• Severe bloating
• Intense pain
• Rapid deterioration

X-rays are usually required to distinguish ileus from obstruction. Intestinal surgery in rabbits carries a poor prognosis and is avoided unless absolutely necessary.

Treatment

Rabbits often recover best in their familiar home environment, especially if they have a bonded companion. When possible, treatment is managed at home if the owner can administer medications as directed.

Recovery requires patience and persistence. Improvement may take days to weeks, and setbacks are common before full recovery.

1. Fluids

Rehydration is one of the most critical aspects of treatment.

• Oral fluids
• Subcutaneous fluids (under the skin)
• Intravenous fluids (in severe cases)

At home:

• Syringe-feed water if early signs are noticed
• Offer leafy greens or herbs soaked in water

2. Pain control

Pain can severely suppress appetite and movement. Commonly used medications include:

• Meloxicam
• Buprenorphine
• Gabapentin

Adequate pain relief is essential to encourage eating and activity.

3. Keep warm

A rabbit with a temperature below 100°F must be seen by a veterinarian immediately. Supportive warming may include:

• Hot water bottles
• Heating pads on the lowest setting
• Warmed subcutaneous fluids

Monitor closely to prevent overheating or burns.

4. Anti-gas medication

Gas buildup is painful and worsens ileus.

• Infant anti-gas medication (simethicone, e.g., Mylicon®) is safe
• Dose: 1–2 cc every hour for 3 doses, then 1–2 cc two to three times daily

5. Syringe feeding

A rabbit that is not eating is at risk for:

• Stomach ulcers
• Liver damage

As long as there is no obstruction, syringe feeding is essential.

• Oxbow Critical Care for Herbivores® is strongly recommended
• Softened pellets mixed with vegetable baby food may be used if needed

Feed small amounts multiple times daily.

6. Abdominal massage and movement

• Gentle abdominal massage several times daily can help move gas and stimulate motility
• Do not massage if the rabbit is very tense or in obvious pain
• Slightly raising the hind end may help gas move
• Encourage gentle hopping and movement as tolerated

Tutorial

7. Additional medications

Depending on the case, your veterinarian may prescribe:

• Motility agents (cisapride, metoclopramide) — do not use if obstruction is suspected
• Appetite stimulants (vitamin B-complex, transdermal mirtazapine)
• Maropitant injections to reduce inflammation and visceral pain

Treatment myths

Hairball remedies

Rabbits normally have hair and food in their stomachs at all times. Problems arise only when dehydration and lack of eating cause this material to harden.

• Petroleum-based laxatives coat the mass and prevent fluid absorption
• Pineapple or papaya enzymes do not dissolve hair
• Sugars may worsen bacterial overgrowth

These remedies are not recommended.

Antibiotics

Unless an infection is suspected, antibiotics are unnecessary and may worsen intestinal imbalance by promoting resistant bacteria.

Probiotics

While not harmful, there is no clinical evidence that powdered probiotics are effective in treating GI stasis.

Prevention

Diet and routine care are the foundation of prevention.

Key dietary guidelines:

• Unlimited grass hay (timothy or similar) available at all times
• Daily leafy greens for hydration
• Limit pellets to no more than ¼ cup per 5 lb of rabbit per day, if fed at all
• Avoid sugary or starchy foods

Foods high in sugar and starch can promote overgrowth of harmful bacteria such as Clostridium, which can be fatal.

Regular veterinary care is also essential:

• Annual wellness exams
• Routine dental evaluations to detect problems early

Final note

GI stasis is a medical emergency and should never be ignored. Early recognition, prompt treatment, and addressing the underlying cause offer the best chance for recovery. If your rabbit stops eating or producing feces, seek veterinary care immediately.

From Minnesota Companion Rabbit Society: GI Stasis in Rabbits — Immediate Steps to Take

• Encourage exercise. This will not be easy in a very sick rabbit, but be forceful – they NEED to stretch out their body and hop. By lengthening, they will allow things to begin moving.
• Give tummy massages. Gently massage your rabbit’s belly from the chest to the tail.
• Syringe feed water and medications: Baby gas drops (Simethicone), one dose of pain medications such as Rimadyl or Metacam, and .75 ml Metoclopramide (Reglan).
• Use a syringe to force feed a slurry of Critical Care for Herbivores, water, and baby squash.
• Call your vet if your rabbit does not start to poop after several hours. If your vet’s office is closed, locate your nearest emergency clinic, bring them this GI Stasis printout, and request IV Fluids, Metacam, and Reglan. A cat/dog vet will know how to administer this treatment and these medicines.