Rabbit hypothermia is a serious winter risk. In this guide we’ll explore what hypothermia truly is, learn the early signs, symptoms, how to respond safely, emergency treatment, and winter care tips to protect indoor and outdoor rabbits from cold weather.
Hypothermia in rabbits is a medical emergency that can develop far more quickly than most people realize. Because rabbits have delicate body systems, even a brief drop in body temperature can put dangerous stress on their organs. Whether a rabbit lives indoors, spends supervised time in snow, or is housed outdoors in colder climates, understanding how hypothermia happens is essential for any caregiver.
What is Hypothermia?
Hypothermia is a medical emergency that occurs when a rabbit’s core body temperature falls below the healthy range of 101–103°F (38.3–39.4°C). When the body loses heat faster than it can produce heat, it can cause a dangerously low body temperature and thus the body struggles to maintain normal metabolic function, causing circulation, digestion, and organ systems to slow down.
Rabbits are especially vulnerable to sudden drops in temperature because of their sensitive thermoregulation, small size, and high surface-area-to-volume ratio. They can lose heat quickly when their fur becomes damp or they are exposed to drafts and succumb to hypothermia within hours. Even mild hypothermia can escalate rapidly, making early awareness and prompt care essential for your rabbit’s safety.
How Rabbits Get Hypothermia
Rabbits can become hypothermic in more ways than many owners expect. Cold, windy, or damp conditions can pull heat from their bodies very quickly, making outdoor environments, unsheltered spaces or uninsulated housing especially risky. Even indoor rabbits can develop hypothermia if their living area is kept too cool or exposed to drafts near windows or doors.
Wet fur is another major contributor by dramatically increasing heat loss. Something as simple as a leaky water bottle, spilled water crock, damp bedding, or melting snow from playtime can put a rabbit at risk. Snow exploration—though charming—can chill a rabbit rapidly, especially if they sit still or dig in wet snow. Moisture in any form can accelerate heat loss.
Certain health conditions also increase susceptibility. Rabbits who are elderly, very young, underweight, or dealing with illness or trauma have a reduced ability to maintain normal body heat. Shock, infection, or gastrointestinal issues can further impair circulation, setting the stage for hypothermia even in otherwise warm environments. For these individuals, even moderate temperatures can pose a real risk.
Early Signs & Symptoms
Early signs of hypothermia may be subtle, but recognizing them quickly can be life-saving. Behavioral changes are often the first clues that something is wrong. Your rabbit may become unusually quiet, lethargic, or reluctant to move or they may adopt a hunched posture or curl tightly to conserve heat.
Physical signs include cold ears, feet, or body; shivering or trembling; pale gums; and visibly slower or shallower breathing. As hypothermia progresses, symptoms become more severe. You may notice a weak pulse, dull or unfocused eyes, difficulty standing, or unresponsiveness. A rabbit who is very cold to the touch or shows signs of stiffness is in a critical state and requires immediate veterinary attention. Because rabbits mask discomfort instinctively, even mild signs should be taken seriously.
Treatment
If you suspect hypothermia, act immediately and quickly, but gently. Move your rabbit to a warm, quiet indoor space to reduce further heat loss and shock. Begin warming them gradually by wrapping them in a dry towel or fleece and holding them close for shared warmth. Warm a bath towel in the microwave (30 seconds at a time until very warm) and wrap the rabbit. This will not retain heat for long, but will help warm the whole body. You can place a heating pad on low outside their carrier or surround them with warm (never hot) water bottles wrapped in cloth to provide indirect heat.
According to the University of Miami you can “fill plastic bottles or Ziplock bags with hot water, and wrap them in towels to protect the bunny from being burned. Place the hot water bottles under and around the bunny, and monitor temperature until it is at least 100oF/38.1oC. At that point, loosely wrap the bunny in towels warm from the dryer, and get him to the vet right away.”
Avoid direct heat sources such as hair dryers, heating pads touching the rabbit, or hot water bottles placed against their body as these can cause burns or shock. If your rabbit’s fur is damp, gently pat it dry. Do not bathe or expose them to forced warm air.
If your rabbit is awake, alert and willing, offer fresh greens or lukewarm water to help support hydration and circulation. Seek veterinary care promptly, especially if it’s temperature is below 100°F, symptoms are moderate to severe, or there is no improvement within 20–30 minutes. A veterinarian can administer warmed IV fluids, oxygen therapy, and controlled thermal support that cannot be safely replicated at home.
Avoid:
✖ Hot water bottles directly touching the rabbit
✖ Hair dryers or forced hot air
✖ Submerging in warm water
These can cause shock or burns.
It is extremely important to have an established relationship with an exotic vet before an emergency arises. It is also advisable to know where the nearest exotic emergency vets are located in case your vet is unavailable or closed.
Prevention Is Key
Wild rabbits live in underground warrens during the cold winter months. These are around 10 degrees Celsius and remain constant. A shift from cold to hot or hot to cold can be extremely harmful for rabbits, especially domestic pets that do not have access to underground warrens or the familial rabbit group.
Preventing hypothermia is far easier than treating it. Indoor rabbits typically will not have this issue, however it is best to make sure the rooms they live in have a consistent temperature between 60–75°F. Be sure their x-pen is not placed in front of a window as this can be drafty and will not be as warm as the rest of the house. Provide soft bedding such as fleece, blankets, or soft, dust extracted straw (which is warmer than hay which is actually food), and ensure water sources cannot spill or freeze.
For rabbits that live outdoors, proper housing is essential… ideally a small outbuilding such as a shed that is fully insulated, has heat, good airflow and located where it is protected from wind and rain. Add rugs or blankets to prevent cold from seeping up from the ground. Offer plenty of straw for bedding as well as hidey houses they can curl up in. Change litter daily and be sure to check twice a day for frozen water, damp bedding, or drafts that need sealing.
If the temperature is going to be below freezing for an extended period of time, consider bringing your rabbit indoors, especially those rabbits that are at higher risk for hypothermia. According to the RWAF “If you bring an outdoor rabbit inside, the temperature where they are being kept indoors must not be too high, which can cause rabbits to overheat initially as well as lose their protective winter coat which would cause them to suffer when they go back outside.”
Whether your rabbit lives inside or out, physical activity is very important to your rabbit. Exercise improves circulation, keeps their muscles strong and provides enrichment which staves off boredom. For outdoor snow explorations, clear an exercise area of snow and debris, keep sessions brief—usually a few minutes at most and supervise them to ensure they stay warm and safe.
Monitor closely for stillness or dampness, dry their feet and belly afterward, and bring them into a warm room to recover. If you are heading out in your car, the inside of it is likely to be the same temperature as outside so take plenty of time to warm it up first and never leave your rabbit in the car in extreme cold or heat for that matter.
Throughout winter, monitor your rabbit’s weight, behavior, and environment daily. Have an emergency warming plan in mind. Awareness and preparation are powerful tools for preventing cold-related emergencies and ensuring your rabbit stays healthy all season long.
Final Thoughts…
Catching hypothermia early and knowing exactly how to respond can make all the difference in your rabbit’s recovery. By staying aware of changing weather, monitoring your rabbit’s body temperature, behavior, and living environment, you can prevent most cold-related emergencies before they start.
Create a warm, secure space for your rabbit during the colder winter months. Whether your rabbit enjoys brief snowy adventures or lives outdoors with proper protection, thoughtful seasonal preparation and attentive care are your strongest tools to keep them safe. With the right knowledge and precautions, your rabbit can remain comfortable, healthy, and happily hopping no matter how cold the world outside becomes.
Sources:
- WabbitWiki Hypothermia
- Krempels, Dana Ph.D Detecting Illness Before It’s An Emergency hare.as.miami.edu
- Rocky Mountain House Rabbit Rescue Rabbit Emergency Information
- PDSA Hypothermia in Pets December 2021
- Colchester Home Visit Vet Service Rabbits and cold weather – Do bunnies get hypothermia?
- FirstVet Winter Safety Tips for Rabbits
- Rabbit Welfare Association & Fund Outdoor Rabbits in Cold Weather
- Winter Hole Hay Winter Rabbit Housing: Keeping Your Bunny Safe and Cozy
- Merck Veterinary Manual Normal Rectal Temperature Ranges
