Experts divided on whether to shave a dog’s coat in hot weather

Experts disagree on whether shaving a dog’s coat helps it cope with heat, according to a report by Finnish public broadcaster Yle.

Kirsi Swan, a researcher and teacher at the University of Helsinki’s Faculty of Veterinary Medicine, advises against shaving a dog’s coat, warning it may disrupt the animal’s natural temperature regulation. Dogs adapt to their environment by growing fur suited to the ambient temperature, she said.

Shaving can be particularly problematic for double-coated breeds. The undercoat insulates against heat, and removing the topcoat while leaving the undercoat may trap heat more effectively than the full double layer. Swan also noted that fur protects a dog’s skin from UV radiation.

However, she acknowledged exceptions, such as cases where a dog struggles to cool itself due to restricted airflow caused by breed traits or health issues. In such instances, shaving may be justified.

Veterinarian Tanja Mathisen of the Pups ’n Pets clinic in Helsinki takes a different view, calling shaving a simple way to cool a dog. She keeps one of her own dogs shaved in summer while leaving the other, which already has short fur, unshaved. Mathisen recommends leaving a few centimetres of fur to protect the skin from the sun.

She observed that her shaved dog shows higher energy levels in hot weather, suggesting it feels more comfortable. Shorter fur also reduces the risk of inflammation, as wounds can fester under long hair, she added.

Both experts agree that the priority should be keeping the dog’s environment cool. Owners should provide shade, avoid walking dogs in direct sunlight—especially on hot asphalt—and ensure access to water. Dogs cool themselves primarily by panting, which leads to rapid fluid loss if they cannot drink enough.

Swimming is an effective way for dogs to cool down, as is digging, since their paws lack fur. However, using ice or very cold water is not recommended, as it can cause discomfort or health issues.

Anna Hielm-Björkman, a veterinarian and researcher at the University of Helsinki, noted that Finland has not conducted studies on whether shaving a dog’s coat is beneficial in hot weather.