First aid
Heatstroke: dog first aid
Use this when your dog is overheated after hot weather, exercise or a hot car and is panting hard, weak, confused or collapsing.
Get your dog to a vet as soon as you can
Find an emergency vetWhat to do
- Move your dog out of the heat into shade or a cool room right away.
- Run the coldest water you have from a tap or hose over the body, especially the belly and other thin-haired areas, so it soaks to the skin. Keep water away from the nose and mouth.
- Use a fan or open windows to make a breeze.
- Offer cool water to drink if your dog is alert, but don't force it.
- Call your vet to say you're coming.
- Without a thermometer, keep cooling for about 15 minutes before you leave. With a rectal thermometer, stop active cooling at about 104°F (40°C).
- If your dog breathes noisily (snoring or rasping), keep cooling until the panting clearly eases or it reaches 101.5°F (38.6°C), whichever comes first.
- Pat your dog dry and drive to the vet in a cool, well-aired car.
Don't
- Don't delay cooling to look for cool water. The coldest running water you have is fine.
- Don't cover your dog with a wet towel or cuddle it. It can trap heat.
- Don't wait to see if your dog gets better.
Signs
- Heavy panting or noisy breathing
- Drooling
- Red gums and tongue
- Weakness or low energy
- Vomiting or diarrhea
- Confusion
- Collapse
- Seizures
Why
Heatstroke is life-threatening. The faster a dog is cooled, the better its chance of a full recovery, so cool first, then go to the vet.
Sources
- RECOVER Guidelines: First Aid for Dogs and Cats, Clinical Guidelines (J Vet Emerg Crit Care, 2026)
- PDSA: First Aid for Heatstroke
- RSPCA: First Aid for Your Dog
Guide reviewed 9 October 2026.
General information from the sources above, not a diagnosis. When in doubt, call your vet.