One of the most important responsibilities of owning a rabbit is keeping it healthy. Unlike dogs or cats, rabbits are prey animals. In the wild, showing weakness makes a rabbit vulnerable to predators. That instinct remains strong in our pet rabbits, even after generations of domestication.
This means rabbits hide their symptoms. By the time a rabbit obviously appears sick, it has often been dealing with the problem for some time. Knowing what to watch for and understanding common health problems gives you the best chance of catching issues early, when they are easier to treat.
GI Stasis
Gastrointestinal stasis, often called GI stasis, is one of the most dangerous conditions a rabbit can face. It occurs when the digestive system slows down or stops entirely. This is not a minor digestive upset. It can become fatal within 24 hours.
What Happens
A rabbit's digestive system depends on constant movement to process food. When gut motility slows, food backs up in the stomach and intestines. This creates an ideal environment for harmful bacteria to multiply, which can lead to bloat, toxin release, and organ failure.
Warning Signs
- Sudden loss of appetite or refusing favorite foods
- Smaller than normal or no fecal droppings
- Dark, small, or misshapen droppings
- Lethargy and hunching
- Gurgling sounds from the stomach
- Weight loss
Prevention
The single most important prevention is unlimited hay. A rabbit should have access to grass hay (timothy, orchard, meadow) at all times. Hay keeps the digestive system moving. Pellets should be limited to about 1/4 cup per 5 pounds of body weight daily. Fresh vegetables provide variety and additional fiber. Always ensure your rabbit has access to clean water.
Reduce stress wherever possible. Rabbits are sensitive to changes in environment, diet, and routine. Handle your rabbit gently and avoid frightening experiences. Regular exercise also supports healthy digestion.
Dental Disease
Dental problems are remarkably common in rabbits. A rabbit's teeth grow continuously throughout its life, about 2 to 3 millimeters per week. If the teeth do not wear down properly, they can develop sharp points, overgrow, and cause serious problems.
What Happens
Rabbits need to chew hay and fibrous foods to wear their teeth down naturally. When diet lacks sufficient fiber, the teeth can grow too long or develop sharp spurs that cut into the tongue or cheeks. This makes eating painful and can lead to infections, abscesses, and weight loss.
Warning Signs
- Dropping food or difficulty eating
- Weight loss despite having an appetite
- Excessive drooling or wet chin
- Food stuck in the cheek pouches
- Grinding teeth loudly (not the soft purring sound)
- Eye discharge or bulging eyes (from tooth root problems)
Prevention
Unlimited grass hay is again the key. The constant chewing action wears teeth down evenly. Avoid feeding too many pellets, especially muesli-style mixes where rabbits may pick out the tasty bits and leave the fibrous parts. Chew toys such as apple wood, willow sticks, and cardboard provide additional wear and enrichment.
Have your rabbit's teeth checked regularly by a rabbit-savvy veterinarian. Some rabbits have genetic predispositions to dental problems and may need more frequent monitoring.
Respiratory Infections
Upper respiratory infections, often called "snuffles," are common in rabbits. While a mild case might seem like a simple cold, respiratory infections can progress to pneumonia, which is life-threatening.
What Happens
Bacterial infections, typically caused by Pasteurella or Bordetella bacteria, affect the nasal passages and sinuses. The infection can spread to the lungs and develop into pneumonia. Rabbits with compromised immune systems or underlying health problems are more vulnerable.
Warning Signs
- Sneezing or sniffling
- Discharge from the nose (clear at first, then thick or colored)
- Wet or matted front paws (from wiping the nose)
- Labored breathing or wheezing
- Lethargy and reduced appetite
- Swollen eyes or eye discharge
Prevention
Keep your rabbit's living area clean and well-ventilated. Avoid dusty bedding, which can irritate the respiratory system. Reduce stress and ensure good nutrition to support the immune system. Quarantine any new rabbits for at least two weeks before introducing them to your existing rabbits.
Seek veterinary care promptly at the first signs of respiratory illness. Early treatment with antibiotics is usually effective.
E. Cuniculi (Encephalitozoon cuniculi)
E. cuniculi is a microscopic parasite that infects rabbits worldwide. It can cause kidney damage, neurological problems, and other serious health issues. Many rabbits carry the parasite without showing symptoms, but stress can trigger active infection.
What Happens
The parasite spreads through spores in urine. Rabbits can become infected by ingesting contaminated food, water, or bedding. The spores travel through the bloodstream to organs including the kidneys, eyes, and brain. In pregnant rabbits, it can cross the placenta and infect developing kits.
Warning Signs
- Head tilt (wry neck or vestibular disease)
- Loss of balance or circling
- Seizures or tremors
- Kidney problems (increased thirst, weight loss)
- Cataracts or eye inflammation
- General weakness or paralysis in hindquarters
Prevention
Purchase rabbits from breeders who test their stock for E. cuniculi. Keep housing clean and dry. Reduce stressors that can trigger outbreaks. Some veterinarians recommend preventive treatment with fenbendazole for rabbits in high-risk situations.
Infected rabbits can often live comfortable lives with proper management and veterinary care.
Flystrike (Myiasis)
Flystrike occurs when flies lay eggs on a rabbit, usually around soiled fur or open wounds. The eggs hatch into maggots that burrow into the rabbit's flesh, causing severe infection and toxicity. It is preventable but can be fatal if not caught early.
What Happens
Blow flies (bluebottles or greenbottles) are attracted to damp, soiled fur, particularly around the rear end. In warm weather, eggs can hatch within hours. The maggots feed on living tissue, releasing toxins that cause septic shock.
Warning Signs
- Lethargy and weakness
- Strong, unpleasant odor
- Wet or discolored fur around the backend
- Visible maggots or eggs (look like small white rice grains)
- Loss of appetite
- Pain or sensitivity when touched
Prevention
Keep your rabbit's living area immaculately clean. Check your rabbit's backend daily, especially in warm weather or if your rabbit is elderly, overweight, or has diarrhea. Keep fur around the backend trimmed short. Use fly traps or screens to keep flies away. Some owners use preventive flystrike products approved by their veterinarian.
Urinary Problems
Rabbits can develop several urinary tract issues, including bladder sludge, urinary tract infections, and bladder stones. These are particularly common in older rabbits and certain breeds.
What Happens
Calcium deposits can build up in the bladder, creating thick sludge or actual stones. This is painful and can block the urethra. Bacteria can also travel up the urinary tract and cause infections. Males are particularly prone to urinary blockages.
Warning Signs
- Blood in the urine
- Straining to urinate or only producing small amounts
- Crying or squeaking during urination
- Urinating outside the litter box
- Lethargy and reduced appetite
- Wet backend or staining from urine
Prevention
Ensure your rabbit has plenty of fresh water. Some rabbits drink more from a water bowl than a bottle. Limit pellets that are high in calcium (alfalfa-based). Provide a clean litter box. Have your rabbit spayed or neutered, which reduces the risk of urinary problems.
When to See a Veterinarian
Because rabbits hide illness so well, any significant change in behavior, appetite, or bathroom habits warrants attention. Do not wait to see if your rabbit "gets better" on its own. rabbits can deteriorate rapidly.
Seek emergency veterinary care if your rabbit:
- Has not eaten anything in 12 hours or more
- Is producing no droppings or very small, abnormal droppings
- Shows signs of pain (hunched posture, grinding teeth, reluctance to move)
- Has difficulty breathing
- Is severely lethargic or unresponsive
- Has a head tilt or is circling uncontrollably
Always find a veterinarian who specializes in exotic pets or rabbits before an emergency happens. Not all veterinary clinics have experience with rabbits. Knowing where to go in advance can save precious time.
The Bottom Line
Prevention is far easier than treatment. The foundation of rabbit health is simple: unlimited grass hay, limited pellets, fresh vegetables, clean water, a clean living space, and plenty of exercise. Regular veterinary checkups, even when your rabbit appears healthy, help catch problems early.
Know your rabbit. Pay attention to what is normal for your individual rabbit so you can spot changes quickly. A rabbit that suddenly hides when it usually greets you, a rabbit that stops polishing its food bowl, or a rabbit that produces fewer droppings than usual may be trying to tell you something.
Your rabbit depends on you to be its advocate. By learning about common health problems and staying vigilant, you give your rabbit the best chance at a long, healthy life.