Dog Hot Weather Safety and Heatstroke Prevention

Heatstroke is a life-threatening emergency in dogs that is almost entirely preventable with appropriate management during hot weather.

Key Facts

Dogs regulate body temperature primarily through panting — they cannot sweat through skin like humans
Brachycephalic breeds are at significantly higher risk due to compromised airway anatomy
A car interior can reach 50 degrees Celsius within minutes on a warm day
Heatstroke causes organ failure and brain damage within minutes if not treated
Dark coats, obesity and exercising in high temperatures all increase risk

Welfare Considerations

Heatstroke causes severe suffering and is fatal in a significant proportion of cases even with treatment. Dogs are entirely dependent on their owners to protect them from heat, making owner education a critical welfare intervention. Cars are the most common setting for heatstroke fatalities — even on mild days, car interiors reach dangerous temperatures rapidly. Exercise in the middle of hot days causes many heatstroke cases. The five-second tarmac test — if you cannot hold your hand on the ground for 5 seconds, it is too hot for paw pads — helps owners make safe exercise decisions. Climate change is increasing the frequency of heatstroke risk days.

What You Can Do

Never leave dogs in cars in warm weather — even briefly, even with windows cracked
Walk dogs only in the early morning or evening during hot weather
Always provide shade and fresh water for outdoor dogs
Learn heatstroke first aid: move to shade, cool with tepid (not cold) water, seek emergency vet care