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Signs of Heatstroke in Dogs — and What to Do

Heatstroke is a true emergency, so know the signs: frantic or excessive panting, thick drooling, bright red or dark/bluish gums, glassy eyes, weakness, stumbling, vomiting, disorientation, and eventually collapse or seizures. Normal dog temperature is about 101–102.5°F; above ~104°F is dangerous and above ~106°F is critical. If you see these signs, act immediately — heatstroke can damage organs and kill within minutes.

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What should I do if my dog overheats?

Cool him down, then get to a vet. Move him to shade or AC, offer small amounts of cool water, and cool his body with COOL (not ice-cold) water over the belly, groin, armpits, and paws, using a fan to boost evaporation. Do NOT use ice or ice-cold water — it can constrict blood vessels and trap heat. Then see a vet even if he seems to bounce back, because heatstroke can cause delayed internal organ damage.

How can I exercise my dog safely in hot weather?

Work with your dog's cooling limits. Exercise in the cooler parts of the day and skip midday heat; on hot or humid days, trade sprints for steady low-intensity activity or swimming. Bring water, take shade breaks, and check the pavement — if it's too hot for your palm for 5 seconds, it'll burn paw pads. Let your dog set the pace; a self-imposed break is smart self-preservation, not laziness.

Which dogs overheat most easily?

Flat-faced (brachycephalic) breeds like Bulldogs, Pugs, and Boxers are highest risk because their airways make panting inefficient. Dark-coated and thick double-coated dogs trap more heat; overweight dogs, seniors, puppies, and dogs with heart or breathing conditions all struggle more. If your dog fits any of these, be especially conservative — shorter sessions, more shade and water, and lean on swimming as the safest hot-weather exercise.

Educational only — not veterinary advice. Always work with your vet, especially if your dog is on medication.
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