Rabbit Health Guide: The Signs of Illness Every Rabbit Owner Must Know

Normal Rabbit Vitals to Know

Knowing normal helps you recognize abnormal: Heart rate: 120--150 beats per minute (very fast compared to cats and dogs). Respiratory rate: 30--60 breaths per minute. Temperature: 101--104 F (38.3--40 C) rectally. Urine: May be yellow, orange, brown, or cloudy white (calcium carbonate crystals are normal in rabbit urine); truly red urine (blood) is abnormal but blood from uterine disease in intact females can color urine red. Fecal pellets: Should be round, uniform, dry, and produced continuously -- a healthy adult rabbit produces 200--300 fecal pellets per day. Cecotropes (soft night feces that rabbits eat directly from the anus) are normal and essential for nutrition. Cecotrope consumption: You should rarely see cecotropes because rabbits eat them immediately; finding excessive cecotropes in the cage suggests obesity (can't reach the anus), dental pain, or GI disorder. Activity and appetite: A healthy rabbit is alert, interested in food, active during dawn and dusk periods, and grooms regularly.

GI Stasis: The Most Common Life-Threatening Emergency

Gastrointestinal stasis (gut stasis) -- the slowing or stopping of the digestive system -- is the most common rabbit emergency and a leading cause of rabbit death. The rabbit gut must keep moving; when peristalsis stops, gas accumulates, bacteria proliferate, and the rabbit stops eating, leading to hepatic lipidosis and toxin accumulation within hours. Signs: Reduced or absent fecal output (count pellets daily), no interest in food or hay, hunched posture, teeth grinding (pain), abdominal distension. Causes: Dehydration, inadequate hay intake, stress, dental pain, hairballs (trichobezoars), blockage. Emergency response: Veterinary care immediately -- gut stasis can be fatal within 24--48 hours. Treatment: IV or subcutaneous fluids, pain management, motility drugs (cisapride, metoclopramide), syringe feeding, and addressing the underlying cause. At home before the vet: gentle abdominal massage, encouraging movement (carry the rabbit around), offering fresh herbs to stimulate appetite, ensuring hydration. Do not give simethicone (human gas drops) without veterinary guidance -- it addresses gas symptoms but not the motility problem.

Dental Disease: Silent, Progressive, and Extremely Common

Rabbits have continuously erupting hypsodont teeth (incisors and cheek teeth) that must wear evenly through constant hay consumption. Without adequate hay, cheek teeth develop sharp spurs that lacerate the tongue and cheeks. Incisors can overgrow and malococclude. Signs: reduced appetite (especially for hard foods), dropping food, weight loss, wet dewlap (from drooling), nasal discharge (tooth root infection can open into the nasal passage), facial swelling. Diagnosis requires examination under sedation with an otoscope or specialized equipment -- you cannot see the back teeth by simply opening a rabbit's mouth. Treatment: dental filing under anesthesia (often repeated every 3--6 months for malocclusion), extraction of severely diseased teeth, antibiotics for abscesses. Prevention: unlimited Timothy or orchard grass hay must form 70--80% of the diet. A rabbit that won't eat hay will develop dental disease -- this is not optional fiber.

Uterine Cancer: The Reason Spaying Female Rabbits Is Urgent

Intact female rabbits (does) develop uterine adenocarcinoma (uterine cancer) at astonishing rates: up to 60--80% of intact does by age 3--4 years in some studies. It is the most common malignancy in rabbits. Signs: blood in urine (hematuria -- blood from the uterus mixes with urine), behavioral changes, mammary gland lumps, distended abdomen. The only prevention is spay (ovariohysterectomy) before age 2, ideally between 4--6 months. Neutering male rabbits (castration) prevents testicular cancer, reduces territorial aggression, and enables mixed-sex bonding without breeding. Spayed/neutered rabbits make significantly better companions and live substantially longer. This surgery requires an experienced rabbit-specialist surgeon and appropriate anesthetic protocols.

E. cuniculi: The Neurological Parasite Many Owners Don't Know About

Encephalitozoon cuniculi (E. cuniculi) is a microsporidian parasite infecting an estimated 52% of domestic rabbits in some populations, mostly remaining latent. When activated (by stress, immunosuppression, or unknown triggers), it causes: Head tilt (torticollis): The most dramatic sign -- the rabbit holds its head tilted to one side, sometimes rotating completely ("rolling"). Can also cause: posterior paralysis, cataracts (particularly a "snowflake" opacity in young rabbits), kidney disease, and neurological seizures. Treatment: fenbendazole (Panacure) for 28 days is standard, plus meloxicam for inflammation, and supportive care. Many rabbits with head tilt improve significantly with treatment over 4--8 weeks; some recover completely. Any sudden head tilt in a rabbit is a veterinary emergency (rule out inner ear infection as an alternative cause).