Pets in Hot Weather: Preventing Heatstroke and Heat Stress

Hot weather poses life-threatening risks to companion animals that are almost entirely preventable with basic awareness and management changes.

Key Facts

Dogs can develop fatal heatstroke within 15 minutes in a parked car at 22C external temperature
Brachycephalic dogs (French bulldogs, pugs) are at dramatically higher heatstroke risk due to impaired panting efficiency
Cats, rabbits and guinea pigs are vulnerable to heat stress but their signs are less obvious than in dogs
Exercise on hot days should be confined to early morning and evening to avoid peak ground and air temperatures
Cooling mats, wet towels and small amounts of wet food can all help pets thermoregulate in hot conditions

Welfare Considerations

Heatstroke in pets is almost always preventable — and when it occurs, it is almost always the result of human failure to recognise risk. A dog left in a car for 10 minutes on a warm day can develop fatal hyperthermia within that window. A rabbit in a hutch facing south without shade can develop heat stress that kills within hours. The welfare harm from heatstroke is extreme — it involves multi-organ failure and is extremely painful throughout. The preventive actions are simple and widely publicised; the gap is attention and habit in the moments that matter.

What You Can Do

Never leave any pet in a parked vehicle in warm weather — not even briefly
Walk dogs only in early morning and late evening on hot days — ground temperature burns paws and breathing hot air is hazardous
Provide shade, fresh cool water and appropriate ventilation for all outdoor pets throughout hot weather
Know the heatstroke signs for each species you keep and have an emergency cooling plan ready
Call emergency veterinary services immediately if any pet shows heatstroke signs — this is always a life-threatening emergency