Summer Heat Safety for Dogs: Heatstroke Signs and How to Prevent It

Heatstroke is one of the few genuinely time-critical emergencies in dogs, and it is almost entirely preventable. Most cases follow the same pattern: a walk taken at the wrong time of day, or exercise continued past the point the dog could cope. Knowing the signs and the prevention rules matters more than any product you can buy.

Signs of Heatstroke

• Heavy, frantic panting that does not settle with rest
• Excessive drooling, often thick and sticky
• Bright red or unusually pale gums
• Wobbliness, stumbling or reluctance to stand
• Vomiting or diarrhoea
• Confusion, glazed eyes or collapse

Heatstroke can progress from panting to collapse within minutes. Treat it as an emergency at the first stage, not the last.

What to Do Immediately

1. Move the dog into shade or an air-conditioned space.
2. Pour cool water over the body — current veterinary guidance supports cool water immersion or continuous dousing, not lukewarm water alone.
3. Keep air moving with a fan or an open window.
4. Offer small amounts of cool water if the dog is conscious and able to drink.
5. Contact a vet immediately and go in, even if the dog appears to recover — internal damage may not be visible.

Do not use ice-cold immersion on a collapsed dog without veterinary guidance, and never delay transport to get the temperature down first — cool and travel.

Prevention: The Rules That Matter

• Walk early morning and late evening in hot weather
• Test the pavement with the back of your hand for seven seconds — if it is uncomfortable, it will burn paw pads
• Never leave a dog in a parked car, even briefly, even with windows open
• Carry water on every summer walk
• Skip ball throwing and hard exercise in the heat — dogs will run past their limit
• Provide shade and multiple water bowls in the garden

Dogs at Higher Risk

• Flat-faced breeds — bulldogs, pugs, boxers, French bulldogs
• Overweight dogs
• Thick double-coated breeds
• Puppies, senior dogs and dogs with heart or airway conditions

For these dogs, the safe temperature threshold is considerably lower than for a healthy adult dog of average build.

Cooling Aids That Actually Help

Shade, water and airflow do most of the work. Cooling mats and wet towels laid under the dog help; a wet towel draped over a dog can trap heat and does not. Paddling pools are excellent for dogs who enjoy them.

Frequently Asked Questions

What temperature is too hot to walk a dog?

There is no single figure — humidity, coat, age and breed all matter. Above roughly 20°C, caution is sensible; for flat-faced or elderly dogs, considerably lower.

Can dogs get sunburnt?

Yes, particularly on the nose, ear tips and thinly furred bellies, and especially in white or light-coated dogs. Ask your vet about pet-safe sun protection.

My dog seemed to recover after overheating — do I still need the vet?

Yes. Organ damage from heatstroke may not be visible externally and can develop over the following hours.