Dog owners are being warned that heatstroke risk for dogs starts at temperatures as low as 20C, not just during extreme heatwaves. New guidance from Animal Friends Pet Insurance urges owners to rethink walking routines as the UK experiences a 38C heatwave, which led to a rare red extreme heat warning from the Met Office, school closures, and transport disruptions.
Safe Temperature Ranges for Dogs
Temperatures between 7C and 15C are generally safe for all breeds. At 16C to 19C, owners should monitor vulnerable dogs, including flat-faced breeds and overweight dogs. The critical threshold is 20C to 23C, where all dogs face heatstroke risk, especially during exercise. Dogs with breathing issues or underlying conditions are particularly vulnerable.
Above 24C, conditions become extremely hazardous for all dogs, with puppies and large breeds at heightened risk. At 32C or higher, heatstroke becomes a life-threatening danger for any dog, regardless of breed or fitness, according to the insurer.
Expert Advice on Preventing Heatstroke
Jen Wormleighton, Head of Veterinary Services at Animal Friends Pet Insurance, said: "Many owners see dog walking as part of a healthy daily routine, but in warmer weather, it's important to adapt that routine to keep pets safe." She added: "Heat-related illness can develop much earlier than people expect, especially during exercise or when dogs are walking on warm surfaces. Simple changes like walking earlier in the day, sticking to shaded routes and ensuring access to fresh water can make a significant difference - it's about being proactive rather than reacting to extreme heat."
The RSPCA notes that dogs rely primarily on panting to cool down, making them less effective at regulating body temperature than humans. Heatstroke can be fatal if untreated, and owners should avoid exercising dogs during the hottest parts of the day.
Studies Highlight Vulnerable Dogs
Research from the Royal Veterinary College shows that flat-faced breeds, overweight dogs, and elderly pets are significantly more prone to heatstroke. Many incidents occur during walks or exercise, not just from being left in hot cars. The British Veterinary Association lists early heatstroke signs as excessive panting, difficulty breathing, drooling, weakness, vomiting, and collapse. Owners should move the dog to shade, cool with water, and contact a vet immediately.
