Rabbits absolutely get sick, and they’re actually more vulnerable than many new owners realize. Because rabbits are prey animals, they instinctively hide signs of illness until a problem is well advanced. This means subtle changes in behavior, appetite, or droppings can signal something serious that needs attention fast.
The Most Common Rabbit Illnesses
Domestic rabbits face a handful of health problems far more often than others. Gastrointestinal stasis, where the digestive system slows or stops, is one of the most frequent and dangerous conditions. Respiratory infections (often called “snuffles”), dental disease, and a deadly virus called Rabbit Hemorrhagic Disease round out the list of major concerns. Each of these can progress quickly, so recognizing the early signs makes a real difference in outcomes.
GI Stasis: The Biggest Threat
A rabbit’s gut depends on a constant flow of fiber to keep things moving. Indigestible fiber from hay stimulates the muscles of the intestine and cecum to contract, pushing food through the system. When a rabbit doesn’t eat enough hay, or stops eating for any reason, that movement slows down. Hair and food begin to compact in the stomach, fluid gets absorbed from the mass, and it hardens further. This creates a painful cycle: the compaction causes discomfort, which kills the rabbit’s appetite even more, which makes the stasis worse.
The typical warning signs develop over two to seven days. You’ll notice your rabbit eating less, producing fewer droppings, and becoming quieter than usual. The droppings that do appear become small, dark, and dry. Water intake drops. A rabbit in pain from stasis will sit hunched, refuse to move, and may grind its teeth. If your rabbit stops eating or producing droppings for 12 hours or more, treat it as an emergency. GI stasis can be fatal without prompt treatment.
Snuffles and Respiratory Infections
The term “snuffles” refers to upper respiratory infections, most commonly caused by a bacterium called Pasteurella multocida. It starts with a clear, watery nasal discharge that eventually turns thick and white or yellowish. Affected rabbits sneeze frequently and may make audible snoring or whistling sounds when they breathe.
Pasteurella doesn’t always stay in the nose. It can spread to the ears (causing head tilts and balance problems), the eyes, the lungs, and even form abscesses under the skin or around internal organs. Chronic cases often require months of antibiotic treatment, and some rabbits carry the bacteria for life without ever fully clearing it. Good ventilation, low ammonia levels from clean bedding, and minimizing stress all help reduce the risk of flare-ups.
Dental Disease
Rabbit teeth grow continuously throughout their lives. When the teeth don’t wear down evenly, they develop sharp points called spurs that dig into the cheeks or tongue. Misaligned teeth, known as malocclusion, can also cause the roots to elongate and push into the nasal passages or tear ducts, sometimes triggering eye discharge or chronic snuffles-like symptoms that aren’t actually respiratory infections at all.
Signs of dental problems include drooling, pawing at the mouth, difficulty chewing, dropping food, weight loss, and a scruffy coat from poor grooming. A diet heavy in hay is the single best way to promote even tooth wear. Pellet-heavy or low-fiber diets are a major contributor to dental issues in pet rabbits.
Rabbit Hemorrhagic Disease
Rabbit Hemorrhagic Disease Virus Serotype 2 (RHDV2) is a highly contagious and often fatal virus that has spread through wild and domestic rabbit populations in the United States. It can kill a rabbit within days, sometimes with little warning. The virus spreads through direct contact, contaminated surfaces, insects, and even on clothing or shoes.
A vaccine exists and is given as two injections 21 days apart, with boosters every 6 to 12 months since immunity is short-lived. Availability varies by region. In some areas, veterinarians can import European vaccines during outbreaks through a federal application process. If RHDV2 has been reported in your area, vaccination is worth discussing with a rabbit-experienced vet.
How to Tell a Rabbit Is Sick
Rabbits won’t cry out or limp around to tell you something’s wrong. Their primary response to pain and distress is freezing, becoming motionless, especially when someone is watching. This makes it easy to mistake a seriously ill rabbit for one that’s simply resting. Beyond stillness, look for these specific changes:
- Facial cues: Researchers have identified a set of pain indicators in rabbit faces, including tightening around the eyes, flattened cheeks, changes in nostril shape, whiskers pushed forward or pressed flat, and ears held back or pressed tightly together.
- Posture: A hunched position with reluctance to move suggests abdominal pain. Rabbits may also dig or scratch at the ground repeatedly.
- Eyes: Dilated pupils in normal lighting can indicate pain.
- Appetite and droppings: Any decrease in food intake or change in droppings (smaller, fewer, darker, or absent) is a red flag.
- Breathing: A normal respiratory rate for a rabbit is 30 to 60 breaths per minute. Faster breathing, labored breathing, or audible sounds are signs of distress.
A healthy rabbit has a body temperature between 101 and 103°F and a heart rate of 120 to 220 beats per minute. You likely won’t measure these at home, but knowing the baselines helps if you ever need to relay information to a vet.
Urine Color Changes
Rabbit urine naturally ranges from light yellow to deep reddish-brown, and the color shifts depending on what they’ve eaten. Plant pigments from greens and herbs are the usual cause of red or orange urine, and this is completely normal. The tricky part is that true blood in the urine can look similar. Bloody urine may be caused by bladder stones, urinary tract infections, or uterine problems in unspayed females. If the color change is accompanied by straining, frequent attempts to urinate, or a gritty, paste-like texture in the urine (a sign of calcium sludge), those are reasons for a vet visit.
Common Household Dangers
Several plants and foods that seem harmless are toxic to rabbits. Rhubarb leaves, raw beans, the green parts of potatoes (including the eyes and new shoots), apple seeds, and chocolate all pose risks. Common houseplants like aloe, azalea, lily of the valley, and philodendron are also dangerous. Even some garden flowers like carnations can cause problems. If your rabbit roams freely in your home or yard, audit the space for these plants and keep them well out of reach.
Why Fiber Prevents So Many Problems
A thread runs through nearly every major rabbit illness: diet. Low-fiber diets contribute to GI stasis by robbing the gut of the bulk it needs to keep moving. They contribute to dental disease by failing to wear down teeth. They contribute to obesity, which is linked to skin parasites and spinal problems. Unlimited grass hay should make up roughly 80% of a rabbit’s diet. It’s not just food. It’s the single most important factor in keeping a rabbit’s digestive system, teeth, and overall health functioning the way they should.