Rabbits are delicate and fascinating creatures. Anyone who has ever shared their home with a rabbit knows how much personality and charm they bring into everyday life. From their twitching noses and playful hops to their love for fresh greens, rabbits are full of subtle behaviors that can delight and confuse their owners. However, because rabbits are prey animals in the wild, they tend to hide signs of illness until they are seriously unwell. This natural instinct makes it especially important for owners to be vigilant about detecting early signs of sickness.

I learned this lesson the hard way with my rabbit, Willow. She was always a playful and curious bunny, hopping around the living room and happily munching on her hay. But one day, she seemed less interested in her food and sat in a corner, barely moving. At first, I thought she was just tired or moody.
However, by the next day, she still wasn’t eating, and that’s when I knew something was wrong. A quick trip to the vet revealed she had gastrointestinal stasis, a potentially life-threatening condition in rabbits if not caught early. That experience taught me how crucial it is to recognize the early warning signs of illness.
In this article, we’ll go through 10 warning signs that may indicate your rabbit is sick. Understanding these signs can help you act quickly and potentially save your rabbit’s life.
1. Loss of Appetite
One of the most obvious signs that something might be wrong with your rabbit is a sudden loss of appetite. Rabbits are grazers and should be constantly eating hay throughout the day.
If you notice that your rabbit isn’t interested in their usual food, whether it’s hay, pellets, or fresh greens, this could be a sign of a serious issue.
When Willow stopped eating her favorite parsley, I knew something was off.
Rabbits need to keep their digestive systems moving, and even a short period of not eating can lead to gastrointestinal stasis (GI stasis), a condition where the gut slows down or stops entirely. If your rabbit hasn’t eaten in 12 hours, you should contact your vet immediately.
2. Changes in Droppings
Rabbit droppings are a great indicator of their overall health. Healthy rabbit poop should be round, firm, and consistent in size. If you notice a significant change in your rabbit’s droppings—such as smaller, misshapen, or fewer droppings—it could mean there’s a digestive problem.
Another red flag is the complete absence of droppings, which usually accompanies a lack of appetite. This combination is a sign of GI stasis and requires urgent veterinary attention. On the other hand, if your rabbit’s droppings are very soft or watery, it could indicate diarrhea or an imbalance in their diet.
3. Lethargy
Rabbits are naturally curious and active creatures. If your normally energetic bunny suddenly becomes lethargic, sits hunched up in a corner, or shows little interest in their surroundings, it’s time to pay attention.
When Willow was unwell, she sat in a hunched position with her ears slightly back—a clear sign that she was uncomfortable. Lethargy can be caused by various issues, including pain, digestive problems, or infections. If your rabbit appears unusually tired or withdrawn, don’t hesitate to consult your vet.
4. Teeth Grinding
While rabbits sometimes make a soft grinding noise when they’re content (similar to a cat’s purr), loud or continuous teeth grinding can be a sign of pain. Rabbits experience pain differently than humans, and they may not vocalize their discomfort. Instead, they may express it through behaviors like grinding their teeth, sitting still for long periods, or refusing to eat.
If you hear your rabbit grinding their teeth loudly or notice other signs of discomfort, it’s crucial to get them checked out by a vet.
5. Runny Eyes or Nose
A healthy rabbit should have bright, clear eyes and a clean nose. Discharge from the eyes or nose can indicate a respiratory infection, which is relatively common in rabbits. One common illness is pasteurellosis, also known as “snuffles,” which can cause runny eyes, sneezing, and nasal discharge.
When my friend’s rabbit, Benny, developed a runny nose and started sneezing frequently, she initially thought it was due to dust in the environment. However, a vet visit confirmed it was a bacterial infection requiring antibiotics. Ignoring these symptoms can lead to more severe respiratory problems, so it’s always best to act early.
6. Weight Loss
Weight loss in rabbits can be gradual and hard to notice, especially if they have thick fur. Regularly feeling your rabbit’s body can help you detect any significant changes in weight. If your rabbit feels noticeably thinner or bony, it could be a sign of an underlying health issue, such as dental disease or a chronic condition.
I remember realizing that Willow felt lighter when I picked her up one day. A trip to the vet revealed that she had developed minor dental spurs, which made it uncomfortable for her to eat. Dental issues are common in rabbits due to their continuously growing teeth, and they can lead to weight loss if not treated.
7. Overgrown Teeth
Since rabbits’ teeth never stop growing, they need to constantly chew on hay and other fibrous foods to wear them down naturally. If a rabbit isn’t eating enough hay, their teeth can become overgrown, leading to discomfort and difficulty eating.
Signs of overgrown teeth include drooling, a wet chin, and difficulty chewing. If you notice these signs, your rabbit may need a dental check-up and possibly trimming of their teeth. Providing plenty of hay and chew toys can help prevent this issue.
8. Bloating
Bloating in rabbits is a serious and often life-threatening condition. If your rabbit’s stomach appears swollen or feels unusually firm, and they show signs of pain or distress, it’s critical to seek immediate veterinary care.
Bloating can result from a blockage or gas buildup in the digestive system, both of which require prompt treatment. When Willow had a mild case of gas, my vet recommended gentle tummy massages and a rabbit-safe gas-relief medication, which helped her recover quickly.
9. Difficulty Breathing
If you notice your rabbit breathing heavily, wheezing, or struggling to breathe, it’s a serious warning sign that something is wrong. Rabbits are prone to respiratory infections, which can quickly become severe if left untreated.
Signs of respiratory distress include flared nostrils, open-mouth breathing, and excessive chest movement while breathing. Immediate veterinary attention is necessary if you observe any of these symptoms.
10. Changes in Behavior
Rabbits have distinct personalities, and any sudden change in their behavior can indicate a health problem. If your usually social rabbit becomes aggressive, hides more often, or stops grooming themselves, it could be a sign of illness or pain.

I noticed that Willow started avoiding her usual grooming routine when she wasn’t feeling well. Rabbits are meticulous groomers, and a lack of grooming can lead to a dull or matted coat. Any noticeable behavioral changes should prompt a closer look at your rabbit’s overall health.
Rabbits may be small, quiet creatures, but they require attentive care and observation to ensure they stay healthy. Because they instinctively hide signs of illness, even subtle changes in appetite, droppings, or behavior can signal a serious problem. Acting quickly can make all the difference in preventing a minor issue from becoming a life-threatening emergency.
FAQ: Is Your Rabbit Sick? 10 Warning Signs to Watch Out For
1. How can I tell if my rabbit is in pain if they don’t vocalize like other animals?
Rabbits don’t express pain in the same way that cats or dogs might. Since they’re prey animals, they instinctively hide signs of weakness or discomfort to avoid appearing vulnerable to predators. Instead of vocalizing, rabbits in pain often display subtle behavioral changes. You might notice them sitting hunched up, grinding their teeth loudly, or losing interest in food and play.
When my rabbit, Willow, wasn’t feeling well, she sat quietly in a corner with her ears slightly back and her body tensed up. She also stopped grooming herself, which was unusual for her. These behaviors were subtle but significant once I knew what to look for. If your rabbit suddenly becomes less active, isolates themselves, or shows signs of discomfort, it’s always best to consult a vet.
2. What should I do if my rabbit stops eating?
If your rabbit stops eating, it’s crucial to act quickly. Rabbits have a very sensitive digestive system that relies on constant movement. When they stop eating, even for a short period, it can lead to gastrointestinal stasis (GI stasis), a potentially life-threatening condition where the gut slows down or stops entirely.
If your rabbit hasn’t eaten for more than 6-12 hours, offer them their favorite fresh greens or herbs to see if they’ll take a nibble. Also, encourage them to drink water. If they refuse to eat or drink, contact a rabbit-savvy veterinarian immediately. Don’t wait too long—rabbits can deteriorate rapidly when they’re not eating. A vet might recommend giving fluids or medications to stimulate their appetite and keep their digestive system functioning.
3. How do I know if my rabbit has dental problems, and what can I do to prevent them?
Dental issues are common in rabbits because their teeth grow continuously throughout their lives. Overgrown teeth can cause pain, make it difficult for rabbits to eat, and even lead to weight loss. Some signs of dental problems include drooling, a wet chin, difficulty chewing, picking at food without actually eating it, and weight loss.
Preventing dental issues starts with providing a high-fiber diet. Hay should make up about 80% of your rabbit’s diet, as chewing on fibrous hay helps wear down their teeth naturally. I noticed that when Willow wasn’t eating enough hay, her teeth grew faster, which led to minor dental spurs. After a vet visit and some adjustments to her diet, we got her back on track. Make sure your rabbit always has unlimited access to fresh hay, and regularly check their teeth during grooming sessions.
4. My rabbit’s droppings have changed. Should I be worried?
Yes, changes in your rabbit’s droppings can be an early warning sign of digestive problems. Healthy rabbit droppings are round, firm, and consistent in size. If you notice smaller droppings, misshapen pellets, or fewer droppings than usual, it could indicate that your rabbit isn’t eating enough hay or that they’re experiencing early signs of GI stasis.
Another red flag is the complete absence of droppings, which often accompanies a lack of appetite. In this case, you should contact your veterinarian immediately, as it could indicate a serious blockage or stasis. On the flip side, very soft or runny droppings can result from an imbalance in their diet, such as too many sugary treats or insufficient fiber. Providing plenty of hay and gradually introducing fresh greens can help balance their digestive system. Always monitor your rabbit’s poop—it’s one of the best indicators of their health!
5. What’s the difference between normal teeth grinding and grinding that indicates pain?
Rabbits grind their teeth for two different reasons, and it’s important to distinguish between the two. Soft, gentle grinding (sometimes referred to as “purring”) usually means that your rabbit is content and relaxed. You might hear this sound when they’re being petted or snuggled in a comfortable spot.
However, loud or continuous teeth grinding is a sign of pain or discomfort. This type of grinding is often accompanied by other signs of distress, such as sitting hunched up, refusing food, or showing less interest in their surroundings. When Willow was sick, I heard her grinding her teeth loudly while she sat motionless in her favorite spot—a clear sign that she was uncomfortable. If you ever hear this kind of grinding, it’s best to consult a vet right away.
6. Can a respiratory infection in rabbits be serious, and how can I prevent it?
Yes, respiratory infections in rabbits can be serious and sometimes even life-threatening if not treated promptly. Rabbits are prone to developing upper respiratory infections, often caused by bacteria such as Pasteurella multocida (commonly referred to as “snuffles”). Signs of a respiratory infection include a runny nose, sneezing, watery eyes, and labored breathing. In severe cases, you might notice wheezing or open-mouth breathing, which requires immediate veterinary care.
To prevent respiratory infections, ensure your rabbit’s living environment is clean, dry, and free of drafts. Regularly clean their enclosure and make sure there’s adequate ventilation without exposing them to sudden temperature changes. Also, avoid using dusty bedding or hay, as it can irritate their respiratory tract. When my friend’s rabbit, Benny, developed snuffles, it took weeks of antibiotics and close monitoring to get him back to full health, so I always recommend early action if you notice any signs of respiratory issues.
My experience with Willow taught me to trust my instincts and always err on the side of caution. When something didn’t seem right, I learned to act fast—and it often made a crucial difference. Whether it’s keeping an eye on their eating habits, monitoring their droppings, or simply knowing their normal behavior patterns, being a vigilant rabbit owner can go a long way in keeping your bunny healthy and happy.
If you ever suspect your rabbit might be sick, don’t hesitate to contact a rabbit-savvy vet. Early intervention is key, and with the right care, most rabbits can recover quickly and go back to being their playful, curious selves. After all, our furry friends depend on us to keep them safe—and there’s no greater reward than seeing a happy, healthy bunny hopping around your home.
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