How can you tell if a dog is having heat stroke?

Dogs don’t sweat like humans do, which makes them extra vulnerable to overheating when the mercury rises. Heat stroke isn’t just uncomfortable—it can turn dangerous fast if you don’t spot the signs early.

Panting that’s heavy and rapid is usually the first indicator. A dog cooling down normally pants with a steady rhythm, but heat stroke makes it sound desperate, like they’re gasping for air. Their tongue might hang longer than usual, and their gums could look bright red or even purple—a sign their body’s struggling to circulate oxygen properly.

Restlessness or confusion often follows. Your normally calm pup might pace aimlessly, bump into furniture, or seem disoriented, like they can’t figure out where to go to cool off. Some dogs start acting anxious, whining or pawing at you as if begging for help. These behaviors aren’t just attention-seeking—they’re cries for relief.

Physical weakness is hard to miss. A dog with heat stroke might stumble when walking, or suddenly collapse onto the ground. Their legs could tremble, and they might not have the strength to lift their head. It’s a scary sight, but recognizing it as a red flag means you can act before things get worse.

Vomiting or diarrhea often accompany severe overheating. The body tries to rid itself of toxins from the stress, but this also leads to dehydration. You might notice your dog’s eyes looking sunken, or their skin staying tented when you gently pull it up—classic signs they’re losing too much fluid.

Dry, hot skin is another clue. When you pet their belly or paws, they’ll feel abnormally warm, without the slight coolness you’d expect even on a hot day. Some dogs stop grooming themselves, leaving their coat looking dull or matted, as they don’t have the energy to clean up.

Certain situations raise the risk, like leaving a dog in a parked car—even with the windows cracked, temperatures spike fast, and it’s against the law in most places. Brachycephalic breeds (think pugs or boxers) struggle more because their short snouts make panting less effective. Older dogs and puppies are also more susceptible, so extra caution is key.

If you see these signs, move your dog to shade immediately. Wet their paws, armpits, and belly with cool (not cold) water—cold water can shock their system. Offer small sips of water, but don’t force them to drink. Then call your vet right away—even if they seem to recover, internal organs might have been damaged.

Knowing these signs isn’t just about keeping your dog safe—it’s part of being a responsible neighbor. A dog in distress can panic and act out, so addressing heat stroke quickly helps keep everyone in your community, including other pets and kids, out of harm’s way. After all, a happy dog is one that stays cool, comfortable, and ready for the next adventure—whether that’s a morning walk or a lazy afternoon in the shade.