Heatstroke in Dogs: Symptoms, First Aid and Prevention

Short answer: heatstroke happens when a dog’s body temperature climbs too high for it to cool itself, and it can damage organs within minutes. Watch for heavy panting, thick drool, bright red or pale gums, weakness, stumbling, vomiting or collapse. Move the dog somewhere cool, wet its body with cool (not ice-cold) water, and get to a vet straight away, even if it seems to recover.

Why dogs overheat so easily

Dogs don’t sweat the way we do. They cool themselves mainly by panting, plus a little through their paw pads. When the air is hot, and especially when it is also humid, panting stops working well. A dog’s normal temperature is roughly 38 to 39°C. Once it rises past about 40°C, the body starts to struggle, and above 41°C organs can be damaged. In North Indian cities like Gurgaon and Delhi, where May and June afternoons regularly pass 43 to 45°C, that line is easy to cross on a short walk or in a parked car.

Dogs at higher risk

• Flat-faced breeds: Pugs, Shih Tzus, Bulldogs, Boxers and Lhasa Apsos have narrower airways and pant less efficiently.
• Thick or double coats: Huskies, Saint Bernards, German Shepherds, Golden Retrievers and Labradors, especially if the undercoat hasn’t been brushed out.
• Puppies, senior dogs and overweight dogs.
• Dogs with heart or breathing conditions, or on medication your vet has flagged.
• Very active dogs that won’t stop playing on their own.

Symptoms of heatstroke in dogs

If you see any of the serious signs, call your vet or the nearest emergency clinic while you start cooling your dog.

First aid: the first 10 minutes

1. Get out of the heat. Move your dog into shade, an air-conditioned room or the car with the AC running.
2. Cool with cool water, not ice. Pour cool or room-temperature water over the body, especially the neck, belly, armpits and the inside of the back legs. Very cold water and ice can make blood vessels near the skin narrow, which slows cooling.
3. Add moving air. A fan or the car’s AC on the wet coat speeds up cooling.
4. Don’t drape wet towels and leave them. A towel lying on the body traps heat. Keep re-wetting and let air reach the skin.
5. Offer small sips of water if your dog is alert and wants to drink. Never pour water into the mouth of a dog that is weak or collapsed.
6. Go to the vet, even if your dog seems better. Heatstroke can cause internal damage that shows up hours later. If you have a thermometer, your vet may ask you to stop active cooling once the temperature is around 39.5°C, so your dog doesn’t swing too cold.

Never leave a dog in a parked car

On a hot day, the inside of a closed car heats up far faster than the air outside, and a cracked window barely helps. A few minutes while you pick up something from a shop is enough to put a dog in danger. If you can’t take your dog inside with you, leave it at home.

How to keep your dog cool in summer

• Walk early and late. Before 8 am and after sunset in peak summer. Midday walks are for a quick toilet break only.
• Test the ground. Hold the back of your hand on the road or pavement for seven seconds. If it’s too hot for your hand, it’s too hot for paws. Basement ramps and parking tiles get hot too.
• Water everywhere. Fresh water in more than one place at home, and a bottle and bowl on every outing.
• A cool spot indoors: a tiled floor, a cooling mat, a fan or the AC on the hottest afternoons.
• Cut back on exercise on very hot days. Swap long runs for sniffing games and puzzle feeders indoors.
• Frozen treats: plain ice cubes or frozen dog-safe fruit in small amounts.

Grooming for hot weather

The right grooming helps a dog handle heat; the wrong grooming makes it worse. For double-coated breeds, the goal is to remove the dead undercoat so air can move through the coat. A thorough brush-out or a professional de-shed does that. Shaving does not: the outer coat shades the skin from the sun, and a shaved double coat can grow back patchy. Our Golden Retriever grooming guide explains why trimming beats shaving.

Long-coated breeds like Shih Tzus and Lhasa Apsos are different: their hair keeps growing, so a shorter summer trim is fine and helps. See dog haircut styles for easy-care summer cuts. Huskies need special care in Indian summers, covered in our Husky summer care guide.

Summer grooming at home, without the heat of a car ride. In Gurgaon, book pet and dog grooming at home in Gurgaon, where May and June are the toughest months for double coats. Also available across Delhi NCR, Noida, Hyderabad, Chennai, and Mumbai.

Heatstroke FAQs

What are the first signs of heatstroke in a dog?

Heavy panting that doesn’t ease in the shade, thick drool, bright red gums and restlessness. Stumbling, vomiting, pale gums or collapse mean it has become an emergency.

What should I do if my dog has heatstroke?

Move it somewhere cool, pour cool (not ice-cold) water over the neck, belly, and legs, add a fan, offer small sips of water if it’s alert, and take it to a vet immediately.

Can a dog recover from heatstroke?

Many do, especially when cooled quickly and treated by a vet early. Severe cases can cause lasting organ damage, which is why a vet check matters even when a dog seems to bounce back.

Should I shave my dog to prevent heatstroke?

Not if it has a double coat. Brushing out the undercoat helps far more. Long-coated breeds whose hair keeps growing can have a shorter summer trim.

What temperature is too hot to walk a dog?

There’s no single number, because humidity, breed, and fitness matter. As a rule, if the ground is too hot for the back of your hand for seven seconds, or it’s the middle of a summer afternoon in North India, keep the walk short and stay in the shade.