Winter Safety for Cats: Cold, Antifreeze, Heaters and Outdoor Risks

By Tailwisp Editorial TeamUpdated October 20, 20264 min read

Winter brings short days, cozy blankets and new hazards for cats. A thick fur coat does not make a cat immune to cold, and many winter dangers are hidden, from antifreeze puddles to warm engines. A few precautions keep your cat comfortable and safe until spring.

Cold and hypothermia

Cats lose heat quickly, especially small, thin, old or sick cats. Hypothermia occurs when body temperature falls too low.

Signs include:

• Shivering
• Lethargy and weakness
• Cold ears, paws and tail
• Slow breathing or heartbeat
• Stumbling
• Collapse

Frostbite affects ears, tail and paws, causing pale or blue skin that later turns red, swollen or blistered. If you suspect hypothermia or frostbite, wrap the cat in warm, dry blankets, warm gradually and call a vet. Do not use direct heat or rub frozen tissue. See the emergency warning signs guide, and use the US vet directory to find an emergency clinic.

Keep cats indoors

The simplest way to protect a cat in winter is to keep it inside. Outdoor and community cats face cold, ice, predators and cars. If a cat must be outside, provide a shelter that is insulated, raised off the ground and with a small entrance. Use straw rather than blankets, which hold moisture. Check that water has not frozen.

Antifreeze

Antifreeze contains ethylene glycol, which tastes sweet to cats and is deadly. Even a small amount can cause kidney failure within hours to days.

Signs include:

• Drunken-like behavior and stumbling
• Vomiting
• Excessive thirst and urination
• Lethargy
• Seizures

This is an emergency. Call a vet or poison helpline immediately. Treatment works best within hours. See chronic kidney disease in cats for what kidney damage means.

Prevention: Clean up spills right away, store containers securely and consider antifreeze made with propylene glycol, which is less toxic. Also be careful with de-icing salts and chemicals. Wipe paws after walks, since cats may lick them.

Cars and engines

Cats seeking warmth may crawl under car hoods or onto wheels. Before starting a car in cold weather, bang on the hood, honk or check under the car. This habit can save a life.

Heaters, fires and heated pads

• Use guards on fireplaces and wood stoves.
• Keep space heaters out of reach, and choose models with tip-over shutoffs.
• Do not leave cats alone near open flames.
• Use pet-safe heated pads with chew-proof cords and thermostats. Check regularly.
• Beware of electric blankets, which can overheat.
• Keep carbon monoxide detectors in working order.

Indoor comfort

• Provide warm, soft bedding in draft-free spots.
• Allow access to sunny windows.
• Raise beds off cold floors.
• Offer a cat cave or covered bed.
• Keep humidity comfortable for skin and breathing. Dry air can irritate cats with asthma. See feline asthma.

Food and water

Cats that spend time outside may need more calories. Indoor cats may become less active, so watch weight. See how much should I feed my cat. Make sure water is fresh and not frozen. Cats can become dehydrated in dry heated homes. See how to get a cat to drink more water.

Older and arthritic cats

Cold can worsen joint pain. Provide warm beds, ramps and easy access to litter and food. See the senior cat care guide.

Winter enrichment

Short days and bad weather can lead to boredom. Provide play, puzzle feeders and window perches. See indoor cat enrichment ideas. Rotate toys and add new climbing spots.

Holiday hazards

Winter holidays bring extra risks. See holiday hazards for cats.

Community and stray cats

If you feed outdoor cats, provide insulated shelters and fresh food and water that does not freeze. Local rescue groups can advise on building simple shelters from storage bins and straw. If a cat looks sick or very cold, call a rescue or vet. Never leave a cat trapped in a garage or shed without warmth, and do not use hay, which holds moisture.

Preparing for storms and outages

Keep a winter kit, with extra food, water, litter, medication and a carrier. If power goes out, gather your cat in a warm room, and use blankets. Have a plan to evacuate with your cat if needed, and keep a microchip registry up to date. See cat microchipping and identification.

Frostbite and paw care

If your cat goes outside in snow, wipe its paws on return to remove salt and ice melt, which can irritate skin and be toxic if licked. Trim long fur between the toes to reduce ice balls. Check ears and tail tips for pale or hard skin. Keep outdoor time short, and bring the cat in at the first sign of shivering.

Contrast with summer

Heat is also dangerous. See keeping cats cool in hot weather for the other end of the thermometer.