What are the signs of heatstroke in dogs?

Rapid heavy panting, excessive drooling, bright red or purple gums and tongue, weakness or staggering, vomiting, body temperature above 40°C (104°F), confusion, seizures and loss of consciousness in severe cases.

What should I do if my dog has heatstroke?

Move the dog to a cool area immediately, wet the coat with cool (not ice cold) water — especially neck, armpits and groin — offer small sips of cool water if conscious, and get to an emergency vet without delay. Do not wrap in wet towels and do not use ice or very cold water — both can make the outcome worse.

At what temperature is it dangerous for dogs to be outside?

Risk increases from about 25°C (77°F) combined with high humidity. At 28–30°C in direct sun, a dog without adequate shade and water can develop hyperthermia within 20–30 minutes — especially brachycephalic breeds, overweight dogs or seniors.

Can dogs die from heatstroke?

Yes, and it happens every summer. Untreated heatstroke causes multi-organ failure (kidneys, brain, clotting system) and can be fatal within hours. Even with emergency treatment, mortality in severe cases exceeds 50%. Prevention is the only reliable strategy.

Heatstroke in Dogs: Symptoms, First Aid and How to Prevent It

Why Dogs Are So Vulnerable to Heat

Dogs do not sweat through their skin the way humans do — only through their paw pads to a minor extent. Their primary cooling mechanism is panting, which evaporates water from the respiratory tract. In extreme heat or high humidity, this system becomes overwhelmed and body temperature rises rapidly. A dog's normal temperature is 38–39°C (100–102°F); above 41°C (106°F) organ damage begins, and at 43°C (109°F) it may be irreversible.

Highest-risk groups:

Brachycephalic breeds (Bulldog, Pug, Boxer, Boston Terrier, French Bulldog): their anatomy limits airflow during panting.
Overweight or obese dogs.
Puppies and elderly dogs: less efficient thermoregulation.
Dogs with heart or respiratory disease.
Dark or very thick coats.

Symptoms: Recognise Them Before It Is Too Late

Early stage (act immediately):

Rapid heavy panting, excessive for the level of activity.
Profuse drooling.
Gums turning bright red (normally a healthy pink).
Restlessness, desperately seeking shade or water.

Severe stage (emergency):

Muscle weakness, staggering, unable to stand.
Purple or white gums (shock).
Vomiting or diarrhoea (sometimes bloody).
Rectal temperature above 40.5°C (105°F).
Confusion, disorientation, glazed eyes.
Seizures or loss of consciousness → absolute emergency.

First Aid: The First 10 Minutes Are Critical

Remove the dog from the heat immediately — to shade or an air-conditioned space.
Wet the coat with cool tap water — neck, armpits, groin and paw pads. Do not use ice or very cold water — this causes peripheral vasoconstriction and slows core cooling.
Create airflow: a fan, air conditioning in the car, anything available.
Offer small sips of cool water if the dog is conscious and able to swallow — do not force.
Get to a vet immediately, even if the dog appears to improve. Internal organ damage can continue even as external symptoms seem to ease.

❌ Do not: use ice packs or very cold water directly on the body, wrap in wet towels (traps heat), give human NSAIDs or pain medication, assume recovery if the dog perks up briefly.

Prevention: The Golden Rules for Summer

Walk before 9am and after 8pm when temperatures exceed 25°C.
Fresh water always available — at home and on walks.
Real shade in the garden or on the terrace — a kennel in direct sun is an oven.
Never leave in a parked car, not even for a moment.
Reduce exercise intensity: summer is not the time for long runs or intense fetch sessions.
Hot pavement test: if tarmac hurts your hand after 7 seconds, it burns their paws.
Cooling mats and paddling pools are effective and most dogs love them.

Log walks, temperatures and any heat incidents in Purzi. A dog that has previously suffered heatstroke is at higher risk of recurrence — your vet needs that history.