How to Keep a Dog Warm in Winter

Keep a dog warm in winter with a well-insulated indoor sleeping spot off the cold floor, a coat or sweater for short-haired, small, senior, or thin dogs on walks, paw protection from ice and de-icing salt, shorter cold-weather outings, and by watching for shivering and other cold-stress signs. How much warmth a dog needs depends on its coat, size, age, and health.

Winter is really the mirror image of the summer problem. Just as you would cool a dog down in summer when the heat climbs, in cold months the job flips to holding body heat in and keeping the elements out. The good news is that most of it comes down to a few simple habits: a warm place to rest, the right gear for the dogs that need it, clean and protected paws, and knowing when it is simply too cold to be outside for long.

Which dogs get cold fastest, and which shrug it off

Cold tolerance varies a lot from dog to dog. The American Veterinary Medical Association notes that a pet's tolerance depends on its coat, body fat stores, activity level, and overall health, so you have to read your own dog rather than a single number (AVMA). That said, some dogs feel the cold much sooner than others.

Dogs that chill quickly tend to share a few traits: short or thin single coats (Greyhounds, Whippets, Boxers, many terriers, and most short-haired mixes), small or toy body size that loses heat fast, very lean builds with little insulating fat, and the two ends of the age range. Puppies and senior dogs both struggle to regulate their temperature, and the AKC points out that very young and very old dogs have more extreme reactions to weather swings (AKC). Dogs with conditions such as arthritis, diabetes, heart disease, or hormonal disorders also handle cold poorly and deserve extra care.

On the other end are the cold-tolerant breeds built for winter: Siberian Huskies, Alaskan Malamutes, Samoyeds, Bernese Mountain Dogs, Newfoundlands, Saint Bernards, and other thick, double-coated northern types. These dogs are often happiest in snow and rarely need a coat. Even so, no coat protects a dog from cold indefinitely, and a healthy northern breed can still get into trouble in extreme or prolonged exposure.

Start with a warm indoor spot

The single most important winter warmth measure happens indoors, because that is where your dog spends most of its time. A cold, drafty floor pulls heat out of a resting dog, so give it a bed raised off the ground with real insulation underneath. PetMD recommends warm bedding, including beds designed to reflect body heat back to the dog, and keeping the home heated on cold days (PetMD).

A few practical steps make a big difference:

• Move the bed away from drafty doors, single-pane windows, and exterior walls, and raise it off tile or concrete with a pad or a raised frame.
• Add extra blankets the dog can burrow into. Many dogs love a covered or bolstered bed that traps warm air.
• Seal obvious drafts with a door draft stopper or by closing off unused, unheated rooms.
• If you use a heated pad or heated blanket, use only a pet-safe, thermostat-controlled model and supervise it. Never let a dog chew a cord or lie on a human heating pad set high.
• Keep older, arthritic dogs especially warm, since cold stiffens sore joints.

Dogs that live primarily outdoors need much more than this in winter, ideally a move indoors. If that is truly not possible, a dog needs a dry, draft-free, insulated shelter raised off the ground with a wind-blocking flap and dry bedding, plus unfrozen water. Frankly, for the cold-sensitive dogs above, the outdoors in winter is not a safe place to live.

Coats, sweaters, and booties: when gear actually helps

A dog coat is not just a fashion statement for the dogs that genuinely need one. The AKC advises that small, delicate, and short-haired dogs, even large short-coated breeds like Greyhounds, should have a proper winter wardrobe including a sturdy coat and a fitted sweater (AKC). The AVMA adds a smart detail: keep a few on hand so the dog always goes out in a dry one, because a wet sweater or coat can actually make a dog colder (AVMA).

For gear to help rather than annoy, fit matters. A coat should cover the chest and belly (where dogs lose a lot of heat) without restricting the legs or rubbing the armpits, and it should be easy to get on and off. Thick, double-coated northern breeds usually do not need a coat at all and can overheat in one, so skip it for them.

Booties are the other useful piece. PetMD notes that boots protect paws both from the cold and from exposure to de-icing salts (PetMD). Not every dog tolerates them, and that is fine; if yours refuses, lean harder on paw cleaning and a paw balm instead. Introduce booties slowly indoors with treats and praise, the same patient, positive approach that works for any new gear. Never force them on a panicked dog.

Paw care against ice, salt, and cracking

Winter is hard on paws from two directions. Sidewalks and roads get coated in de-icing products like rock salt (sodium chloride) and calcium chloride, which can irritate and burn paw pads, and cold, dry air plus snow leaves pads chapped and cracked. The chemicals are also a poisoning risk, because dogs lick their feet. The AVMA advises wiping down or washing your dog's feet, legs, and belly after walks to remove de-icer, antifreeze, and other chemicals so the dog does not ingest them (AVMA).

Build a quick post-walk routine: keep a towel and a small bowl of warm water by the door, and rinse or wipe each foot, reaching between the toes and pads where ice balls and salt collect. Our guide to how to clean dog paws walks through the full technique for getting grit and salt out from between the pads. Dry the feet well afterward, and check for redness, cracks, or limping. A dog-safe paw balm applied before walks can add a protective layer, and keeping the fur between the pads trimmed reduces ice-ball buildup. If you can, choose pet-safe ice melt for your own steps and driveway.

Walking safely in the cold

Dogs still need exercise in winter, but the rules change when it is cold. Shorten sessions and go out more often rather than for one long slog, and keep the dog moving to generate heat instead of standing around. The AKC suggests that when the wind chill drops below about 20 degrees F, playtime should be kept to short 15 to 20 minute sessions with time to warm up inside afterward (AKC). Many of the everyday cold-weather cautions overlap with our broader dog walking safety tips, and this is really the winter version of judging conditions before you head out, the flip side of asking whether it is too hot to walk your dog in summer.

The table below is a rough temperature-risk guide. Treat it as a starting point, not a hard rule, because the same temperature affects a Husky and a senior Chihuahua very differently.

These thresholds line up with veterinary guidance: cold is generally not a problem for most dogs until it falls below 45 degrees F, becomes risky for small, thin-coated, very young, old, or sick dogs below 32 degrees F, and can cause cold-associated problems like hypothermia or frostbite in any dog below 20 degrees F (PetMD). Wind chill and wet fur push the effective temperature lower, so factor those in. On days that are simply too harsh for a real walk, tire the dog out indoors instead with training games, food puzzles, and short bursts of play.

Cold cars, antifreeze, and other winter hazards

Warmth is only half of winter safety. A parked car is one of the biggest traps: in cold weather a vehicle acts like a refrigerator, holding in the cold and chilling a dog dangerously fast, so never leave a dog alone in a cold car. It is the direct winter counterpart to the hot-car warning, and just as serious.

Antifreeze is the season's deadliest household hazard. The AVMA warns that antifreeze and coolants containing ethylene glycol can be fatal to pets even in very small amounts, and that the propylene glycol type, while less toxic, is still dangerous (AVMA). It often tastes sweet to animals, so clean up spills immediately, store containers sealed and out of reach, and keep dogs away from driveways and garage floors where it puddles. If you suspect your dog swallowed any, treat it as an emergency and call your veterinarian or a pet poison hotline right away.

A few more cold-season hazards worth knowing: dogs can wander onto thin ice over ponds and fall through, so keep them leashed near frozen water; space heaters and fireplaces can burn a dog or get knocked over, so supervise; and colder weather burns more calories, which the AKC notes means outdoor and very active dogs may need a bit more food and always fresh, unfrozen water (AKC).

Hypothermia and frostbite: the warning signs

Knowing the signs of cold stress lets you act before it turns serious. Early on, a chilled dog will shiver, act anxious or whine, slow down, and look for somewhere warm to burrow. As hypothermia sets in, the shivering can stop, the dog becomes lethargic, weak, and stiff, its breathing and heart rate slow, and in severe cases it can collapse. If you see these signs, get the dog somewhere warm and dry, wrap it in dry towels or blankets, and contact your veterinarian. VCA advises warming a hypothermic dog gradually, for example with towel-wrapped warm water bottles placed against the body, rather than with direct high heat, and warns that severe cases are an emergency (VCA).

Frostbite tends to strike the body parts farthest from the heart, most often the paws, ear tips, and tail. VCA notes the affected skin may look pale, gray, or bluish at first, feel cold and brittle, and then become red, swollen, and painful as it thaws (VCA). Do not rub or massage frostbitten areas, and do not use direct heat like a hair dryer, since that can worsen the damage. Warm the dog gently and get to a veterinarian, because frostbite and hypothermia often occur together and both need professional care. When in doubt about any cold-related symptom, call your vet rather than waiting it out.

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