Dog Breeds That Handle Heat Best (and Worst)
Two dogs can stand in the same backyard at 95 degrees and have completely different days. One barely notices. The other is in real danger. A lot of that comes down to how a breed is built: muzzle length, coat, and body shape. Here are the dogs that take heat in stride, the ones that struggle most, and why it matters for every owner in summer.
Key takeaways
- Three traits decide it: muzzle length, coat thickness, and body fat. Long nose, thin single coat, lean frame equals a dog that copes.
- Sighthounds top the list. Greyhounds and whippets are the most heat-efficient dogs most owners will meet.
- Flat-faced breeds are the highest risk by a distance. A shortened airway makes panting, the main cooling system, far less effective.
- Double coats are the other risk group, and shaving one makes it worse, not better. That coat insulates against heat too.
- Breed stacks the odds, it does not decide the outcome. Any dog can get heatstroke on the wrong day.
What makes a dog heat-tolerant
Dogs cool off mainly by panting, moving air across a wet tongue and airway to shed heat. So the dogs that handle heat best tend to share a few traits: a longer muzzle (more surface area to cool that incoming air), a lean body that holds less heat, and a short, single coat that does not trap warmth. Many of the best hot-weather breeds trace back to hot parts of the world, which is no accident.
Here is the shortlist at a glance, then the detail on each.
| Breed | Built for | Coat | Why it copes | Still watch for |
|---|---|---|---|---|
| Greyhound and Whippet | Open-country sprinting | Very short, single | Almost no body fat, long muzzle, thin coat | No insulation in cold, and sunburn on pale skin |
| German Shorthaired Pointer | All-day fieldwork | Short, dense | Athletic, long-muzzled, bred to run in warmth | Will work through the midday heat if allowed |
| Vizsla | Hunting in Hungary | Sleek, single | Lean frame, warm-climate origin | Stamina outruns its own limits |
| Chihuahua | Mexico | Short | Tiny and short-coated, actively seeks warmth | Small body dehydrates fast, needs shade and water |
| Australian Cattle Dog | Stock work under the Australian sun | Short but dense | Genuine hot-climate working breed with real endurance | Drive keeps it going past comfort |
| Doberman Pinscher | Guarding | Short, single | Sleek and lean, very little insulation to trap heat | Feels cold far more than heat |
| Dalmatian | Trotting beside carriages | Short | Long muzzle and an athlete's build | Needs steady hydration on long outings |
| Basenji | Central Africa | Fine and short | Among the most heat-native breeds there is | Dislikes wet and cold intensely |
1. Greyhound and Whippet
Lean, leggy, and short-coated, sighthounds are some of the most heat-efficient dogs around. Very little body fat, a thin coat, and a long nose make for excellent cooling. Bonus: despite the racing reputation, they are famous couch potatoes who are happy to nap through the hottest hours.
2. German Shorthaired Pointer
A working gundog bred to run for hours in the field. Athletic, short-coated, and long-muzzled, the GSP handles warm-weather exercise well, as long as you bring water and respect the midday heat.
3. Vizsla
The "Velcro dog" from Hungary has a sleek single coat and a lean, athletic frame. Vizslas were built to hunt in warm climates and tolerate heat better than most high-energy breeds, though their stamina means they will run past their own limits if you let them.
4. Chihuahua
Tiny, short-coated, and native to Mexico, Chihuahuas genuinely enjoy warmth and often seek out the sunniest spot in the house. Their size means they still need shade and water, but heat is rarely their problem (cold is).
5. Australian Cattle Dog
Bred to work livestock under the Australian sun, the Cattle Dog is tough, weather-hardy, and built for warm conditions. A dense but short coat and serious endurance make this a genuine hot-climate working breed.
6. Doberman Pinscher
Sleek, short-coated, and lean, Dobermans shed heat well and have very little insulation to trap it. They feel the cold far more than they feel the heat.
7. Dalmatian
Another short-coated athlete with a long muzzle and a history of trotting alongside carriages for miles. Dalmatians handle warm-weather activity well when kept hydrated.
8. Basenji
The "barkless dog" from Central Africa has a fine short coat and a fastidious, cat-like tolerance for heat. Few breeds are more at home in warm weather.
The breeds that struggle most in heat
Two groups need extra care when the temperature climbs.
| Group | Breeds | What goes wrong | What it means in summer |
|---|---|---|---|
| Flat-faced (brachycephalic) | French Bulldog, English Bulldog, Pug, Boxer, Boston Terrier | A shortened airway makes panting, the main cooling system, far less efficient | Overheats faster and at a lower temperature than other dogs. Shade, air conditioning, very short midday outings. |
| Heavy double coats | Husky, Malamute, Saint Bernard, Chow Chow, Newfoundland | Thick insulation built for cold weather traps heat | Can adapt to warm climates but heats up faster. Do not shave the coat, it insulates against heat too. |
| Overweight dogs, any breed | Any | Fat is insulation, and the extra mass generates more heat to shed | Weight changes the risk profile more than most owners expect. |
| Very young, very old, or unwell | Any | Less efficient temperature regulation and less reserve | Treat the same forecast as one risk band hotter. |
Flat-faced (brachycephalic) breeds. French Bulldogs, English Bulldogs, Pugs, Boxers, and Boston Terriers have shortened airways that make panting far less efficient, so they overheat faster and at lower temperatures than other dogs. The AVMA's warm weather safety guidance specifically flags brachycephalic dogs as high-risk in the heat. If you own one, summer is a season of shade, air conditioning, and very short midday outings.
Heavy double-coated breeds. Huskies, Malamutes, Saint Bernards, Chow Chows, and Newfoundlands carry thick insulating coats built for cold. They can adapt to warm climates, but they heat up faster and need careful management. (And no, you should not shave a double coat: that coat insulates against heat as well as cold.) The AKC's guidance on overheating in dogs is a good primer on which dogs need the most watching.
Any dog can overheat: the rules that apply to all of them
Breed stacks the odds, but heatstroke does not check pedigree. Whatever you own:
- Walk in the cool edges of the day, early morning and after sunset, and skip hot pavement.
- Always carry water and offer it often on warm outings.
- Provide shade and airflow, never a parked car, and watch the humidity, which makes panting less effective.
- Know the warning signs: heavy frantic panting, drooling, wobbliness, bright red gums, or collapse. That is an emergency.
The easiest habit of all is checking the heat before you head out. With WeatherPets, your own dog delivers the day's high and a Live Activity that tracks conditions in real time, which is a gentle daily nudge to plan walks around the heat instead of getting caught out by it. For a heat-sensitive breed, that glance can be the difference between a good day and a scary one.
Frequently asked questions
What dog breeds are worst in hot weather?
Two groups stand out. Flat-faced breeds (French Bulldogs, English Bulldogs, Pugs, Boxers, Boston Terriers) have shortened airways that make panting far less efficient, and the AVMA specifically flags them as high risk in heat. Heavy double-coated breeds (Huskies, Malamutes, Saint Bernards, Chow Chows, Newfoundlands) carry insulation built for cold. Overweight dogs of any breed belong on the list too, since fat is insulation and extra mass generates more heat to shed.
What dog breeds handle heat the best?
Lean, short-coated, long-muzzled dogs, especially ones from hot parts of the world. Greyhounds and whippets lead, followed by German Shorthaired Pointers, Vizslas, Chihuahuas, Australian Cattle Dogs, Dobermans, Dalmatians and Basenjis. The common thread is a long nose with room to cool incoming air, a thin single coat, and very little body fat.
Should I shave my double-coated dog in summer?
No. A double coat insulates against heat as well as cold, so shaving it removes protection rather than adding relief, and it can expose skin to sunburn. Regular brushing to clear the loose undercoat is the right move. If your dog is struggling, cooling gear and better timing help far more than clippers.
Can a husky live somewhere hot?
Yes, plenty do, but the management has to change. A husky heats up faster than a short-coated dog of the same size, so summer means early and late walks, constant water, shade, and accepting shorter outings. The coat stays on.
Does breed decide whether my dog gets heatstroke?
No. Breed stacks the odds, it does not decide the outcome. Heatstroke does not check pedigree, and age, weight, fitness and the day's humidity all matter. Whatever you own, walk in the cool edges of the day, carry water, avoid hot pavement, and learn the warning signs: heavy frantic panting, drooling, wobbliness, bright red gums, or collapse.
Gear that helps: for heat-sensitive breeds, an evaporative cooling vest buys real relief on warm walks. See our full picks in the best dog cooling vests and cooling mats.
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Heat is the factor that turns an ordinary day dangerous fastest, and it rarely announces itself. The Pet Safety Score in WeatherPets folds temperature, humidity, UV, and estimated pavement heat into one 0 to 100 read for your specific pet, so you know before you open the door. Meet your WeatherPet on the App Store.
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A note on health: This article is general information, not a substitute for professional veterinary advice. If you are worried about your dog overheating, or about any serious or emergency health concern, contact your veterinarian right away. Our guidance draws on trusted veterinary sources, including those linked above.
