Heat Exhaustion and Heat Stroke in Dogs: Prevention and Emergency Response

Heat stroke is a potentially fatal emergency in dogs. Understanding prevention and emergency response can be lifesaving. Dogs cannot cool themselves effectively in hot conditions.

Key Facts

Dogs cool primarily through panting — they have very few sweat glands and cannot thermoregulate as effectively as humans
Cars heat to 49 degrees Celsius within 20 minutes on a 21-degree day even with windows cracked
Brachycephalic breeds, obese dogs, and elderly dogs are at significantly higher heat stroke risk
Heat stroke causes rapid organ failure — mortality exceeds 50% without immediate cooling treatment

Welfare Considerations

Heat stroke causes severe suffering through hyperthermia, cerebral oedema, and multi-organ failure. Welfare-positive prevention includes never leaving dogs in cars, avoiding exercise in temperatures above 20 degrees Celsius, providing shade and fresh water, and recognising early signs (excessive panting, drooling, distress). Emergency cooling with cool (not cold) water and immediate veterinary attention is life-saving. Dogs that survive heat stroke face long-term organ damage requiring ongoing monitoring.

What You Can Do

Never leave dogs in parked vehicles in warm weather — temperatures become lethal within minutes
Walk dogs in early morning or late evening when temperatures are below 20 degrees Celsius
Recognise early heat stroke signs: excessive panting, drooling, wobbling, and collapse
Apply cool (not ice cold) water to the dog and seek immediate veterinary attention for suspected heat stroke