If your dog is outside on a hot day, make sure he has a shady spot to rest in. Doghouses are not good shelter during the summer as they can trap heat. You may want to fill a child’s wading pool with fresh water for your dog to cool off in.
Never leave your dog in a closed vehicle on a hot day. The temperature inside a car can rise to over 100 degrees in a matter of minutes.
Always provide plenty of cool, fresh water.
Avoid strenuous exercise on extremely hot days. Take walks in the early mornings or evenings, when the sun’s heat is less intense.
Try to avoid prolonged exposure to hot asphalt or sand, which can burn your dog’s paws.
Dogs that are brachycephalic (short-faced), such as Bulldogs, Boxers, Japanese Chins, and Pekingese, have an especially hard time in the heat because they do not pant as efficiently as longer-faced dogs. Keep your brachycephalic dog inside with air-conditioning.
For more info visit the AKC website http://www.akc.org