Heat stress and heatstroke in dogs are preventable emergencies that cause significant suffering and death each summer. Understanding canine thermoregulation and risk factors enables effective prevention and rapid response.
Heat-related illness in dogs is almost entirely preventable with appropriate owner education and management. The suffering associated with heatstroke — hyperthermia, organ failure, neurological damage, and death — is acute and severe. The combination of dogs' limited thermoregulatory capacity and common owner misconceptions about safety creates preventable welfare crises each summer. Key welfare interventions are behavioural: never leaving dogs in cars, avoiding exercise during peak heat, providing constant cool water, and recognising early signs of heat stress including excessive panting and reluctance to move. Brachycephalic dogs require particular care as their anatomical airway restriction severely limits their cooling capacity even in moderate temperatures.