2. Walk or run on pavement—it's very hot on their pads. Always feel the ground when you have your dog out in the heat; if you can't walk on the ground barefoot then Rex can't either! This goes for the sand, soil and rocks as well.
3. Leave your dog in your car; it's like an oven even for a few minutes. Leave Lassie at home in the A/C instead.
4. Demand any physical activity from him in the middle of the day.
Remember: Just because you're not overheating doesn't mean that your pooch is feeling OK. You don't have fur insulating your body—and you have sweat glands to cool you.
More: Why Do You Sweat?
Sign up for an outdoor activity.