When the temperatures rise, it’s important to remember that not all dogs handle the heat equally—especially large breeds. Their size, coat type, and physical traits can make them more vulnerable to overheating. Heat stroke is a serious, potentially fatal condition, and some large dogs are at a greater risk. Here are 10 large dog breeds that can be prone to heat stroke and why they need extra care during hot weather.
Saint Bernard
With their thick, dense coats designed for snowy mountain rescues, Saint Bernards are not built for the heat. Their heavy fur traps heat, making it harder for them to cool down. They should always have access to shade and water in warm weather and be exercised during the cooler parts of the day.
English Mastiff
This gentle giant can easily overheat due to its massive size. English Mastiffs have a lower tolerance for intense exercise in the heat and can suffer quickly if left in hot environments without proper ventilation. Their calm demeanor may hide early signs of overheating, making vigilance crucial.
Bernese Mountain Dog
Originally bred for cold climates in the Swiss Alps, the Bernese Mountain Dog sports a beautiful double coat that doesn’t mix well with high temperatures. Their thick fur and slower metabolism make them highly prone to heat exhaustion.
Great Dane
Although Great Danes have shorter coats, their size makes it difficult for them to regulate body temperature. They don’t do well in extreme heat and can become dehydrated quickly. They also tend to be couch potatoes, so when they do move around in the heat, it’s a shock to their system.
Newfoundland
Like the Saint Bernard, the Newfoundland was bred for colder environments and water rescues. Their thick, water-resistant coat and large body make hot, humid weather dangerous. Keep them cool, and avoid intense activity in summer months.
Bulldog (including American Bulldog)
While not always massive in height, Bulldogs, including larger varieties like the American Bulldog, are prone to heat stroke due to their brachycephalic (short-nosed) facial structure. This makes it harder for them to pant efficiently and regulate body heat.
Akita
Akitas have thick double coats designed to keep them warm in harsh Japanese winters. While loyal and strong, they are not well-suited for hot climates. They can overheat quickly, especially during outdoor activity.
Rottweiler
With a muscular build and a thick coat, Rottweilers are powerful dogs that need exercise but struggle in hot weather. Their dark fur absorbs heat, and they can easily become dehydrated or overheated during vigorous play.
Alaskan Malamute
Another cold-climate breed, the Malamute’s dense coat insulates against cold but traps heat in summer. They love to be active, which increases their risk of heat stroke during warm weather. Without proper cooling measures, even moderate exercise in the heat can be dangerous.
Leonberger
These fluffy giants are a mix of breeds like the Saint Bernard and Newfoundland, and they inherited the same heavy coat. Their thick fur and size make cooling down difficult, so they require shade, water, and rest during hot days.
- Please Note: This content was created with the assistance of AI and thoroughly edited by a human before publishing.
