A rabbit that stops eating is a medical emergency. Rabbits have a digestive system that must process food continuously. When gut motility slows or stops, a life-threatening condition called gastrointestinal stasis can develop within hours.
GI stasis occurs when the normal muscular contractions of the intestines slow down, allowing gas to build up and bacteria to overproduce. The rabbit experiences severe pain, becomes bloated, and may sit hunched in a corner with eyes partially closed. Without prompt treatment, GI stasis can be fatal within 24 to 48 hours.
Dental disease is another major cause of appetite loss. Rabbit teeth grow continuously, and misaligned or overgrown molars can develop painful spurs that cut into the tongue or cheeks. A rabbit with dental pain may approach the food bowl, appear interested, but then turn away or drop food from its mouth.
Other causes include intestinal blockage from ingested fur or foreign material, infection, pain from an injury or condition like bladder stones, stress from environmental changes, and extreme temperatures.
If your rabbit has not eaten for more than 8 to 12 hours, contact a rabbit-experienced veterinarian immediately. While waiting for your appointment, offer fresh aromatic herbs like cilantro, mint, or basil, which sometimes tempt a reluctant eater. Ensure hay and water are easily accessible.
Do not attempt to force-feed without veterinary guidance, as improper syringe feeding can cause aspiration. Your vet may prescribe gut motility drugs, pain medication, subcutaneous fluids, and assisted feeding with Critical Care formula.
Prevent GI stasis by maintaining an unlimited hay diet, providing daily exercise, minimizing stress, and keeping your rabbit well hydrated. Regular veterinary dental checks catch molar problems before they cause a crisis.