Heat stroke is a preventable, life-threatening emergency in dogs. Understanding risk factors and prevention is critical for dog welfare during summer months and in warm climates.
Heat stroke causes severe suffering through hyperthermia, circulatory collapse, and multi-organ failure. Prevention is far preferable to treatment, which has a significant mortality rate even with emergency intervention. The primary prevention message is simple: never leave dogs in cars in warm weather, even briefly with windows cracked. Secondary prevention includes walking dogs in early morning or evening to avoid peak heat, providing constant cool fresh water, allowing access to shade or cool surfaces, and being alert to overheating signs including excessive panting, drooling, and lethargy. Brachycephalic breeds need additional protection as their compromised airways make panting less effective. First aid for suspected heat stroke (cool water, not cold, applied to the body) before emergency veterinary care can be lifesaving.