A rabbit that is shaking and laying down is almost always in pain, stressed, or physically unwell. This combination of symptoms is not normal resting behavior, and in many cases it signals a condition that needs veterinary attention within hours, not days. The most common cause is gastrointestinal stasis, a painful slowdown of the digestive system, but heat stress, infection, and other sources of pain can produce the same picture.
GI Stasis: The Most Likely Cause
Gastrointestinal stasis is the single most common reason a rabbit will shake, refuse to move, and stop eating. It happens when the digestive tract slows down or stops moving entirely. As motility drops, gas builds up in the intestines and causes painful bloating. The rabbit responds by pressing its belly to the ground, hunching up, or stretching out flat. Trembling or shaking comes from the pain itself.
The most common trigger is diet. Rabbits need a high-fiber diet to keep their gut moving, and hay should make up roughly 90% of what they eat. Too many pellets, too few greens, sugary treats, or a sudden change in food can all disrupt the balance of microbes in the gut and slow everything down. But GI stasis is always secondary to something else. Stress, dehydration, dental problems, or pain from an unrelated injury can all set it off.
Look for these specific signs alongside the shaking and lying down:
- No appetite for more than 4 hours, or refusing favorite treats
- Few or no droppings, or droppings that are smaller and darker than usual
- A tight, bloated belly that feels hard or drum-like when gently touched
- Loud tooth grinding, which sounds like slow, deliberate crunching (distinct from the soft, rapid chattering rabbits do when content)
GI stasis can become life-threatening fast. A rabbit whose body temperature drops below 99°F has three times the risk of dying, and for every additional 1.8°F drop below that, the risk doubles. If your rabbit’s ears feel unusually cold, its belly is distended, or it seems completely unresponsive, treat it as an emergency.
How to Recognize Pain
Rabbits are prey animals and instinctively hide weakness, which makes pain easy to miss until it’s severe. By the time a rabbit is visibly shaking and refusing to move, the discomfort is significant. Beyond the obvious signs, there are subtle facial changes that indicate pain: the cheeks flatten, the nostrils narrow from a rounded “U” shape to a tight “V,” the ears fold inward into a tube-like shape, and the whiskers stiffen and point downward away from the face.
You might also notice bulging eyes, which often accompany tooth grinding. Some rabbits press their abdomen firmly into the ground, tense their body, or sit completely still in a hunched position. Any of these signs alongside shaking and lethargy point to real distress.
Heat Stress
If the room your rabbit is in is warm, heat could be the problem. Rabbits are comfortable between 59°F and 77°F (15–25°C). Once the ambient temperature exceeds 86°F (30°C), heat stress sets in. Above 95°F (35°C), rabbits lose the ability to regulate their body temperature entirely, which can lead to organ failure.
A heat-stressed rabbit will stretch out flat to try to radiate heat from its body. You’ll often see the ears spread wide and held away from the body, since rabbits use their large ear surfaces to cool down. Rapid breathing is another key sign. In severe cases, you may notice drooling or even neurological symptoms like loss of coordination, especially in pregnant rabbits. If the room feels warm to you, move your rabbit to a cooler area immediately, offer water, and place a cool (not ice-cold) damp cloth near the ears.
Neurological Infections
If the shaking looks more like a tremor or your rabbit is tilting its head, losing balance, or circling, a parasite called E. cuniculi may be involved. This organism infects the brain, kidneys, and spinal cord. It’s common in domestic rabbits and can remain dormant for a long time before symptoms appear, often triggered by stress or a weakened immune system.
Head tilt is the hallmark sign. Rabbits with vestibular (balance-related) symptoms may fall to one side, have trouble walking in a straight line, or show rapid involuntary eye movements. Some neurological damage can be permanent, but many rabbits recover well or learn to compensate with treatment and supportive care.
Signs of Shock
Regardless of the underlying cause, a rabbit that’s shaking and lying down may be slipping into shock. This is the most urgent scenario. Check for these warning signs:
- Very cold ears, which suggest a dangerous drop in body temperature
- Pale or white gums instead of a healthy pink
- Blue-tinted lips or tongue, which means the rabbit isn’t getting enough oxygen
- Limp, unresponsive body with little reaction to touch
A healthy rabbit breathes 30 to 60 times per minute and has a normal body temperature between 101.5°F and 104.2°F. Breathing that’s either extremely slow or extremely fast, combined with cold extremities, means the rabbit’s circulatory system is failing. Keep the rabbit warm (wrap it loosely in a towel, place a warm water bottle nearby but not directly against the skin) and get to a rabbit-savvy vet as quickly as possible.
What You Can Do Right Now
Start by assessing the basics. Has your rabbit eaten in the last four hours? Are there normal droppings in the litter box? Is the room temperature above 80°F? Feel the ears: ice-cold or burning hot both indicate a problem. Gently feel the belly for hardness or bloating, but stop if your rabbit flinches or tenses, since that confirms abdominal pain.
Offer fresh water and a small handful of your rabbit’s favorite hay. Sometimes a rabbit with mild GI slowdown will begin nibbling if tempted, and any fiber intake helps restart gut motility. Gentle belly massage, using slow circular motions with light pressure, can sometimes help move trapped gas, but avoid this if the abdomen feels rock-hard or your rabbit reacts strongly to the touch.
Keep your rabbit in a quiet, temperature-controlled space away from loud noises and other animals. If the shaking and lethargy don’t improve within an hour or two, or if your rabbit won’t eat or drink at all, this is not a wait-and-see situation. GI stasis and shock both escalate quickly in rabbits, and early treatment dramatically improves the odds of recovery.