Prevent Heat stroke in Your Dog
A Cool Dog is Better.
The temptation is great, and oh, those puppy dog eyes are just begging to go with you when you leave to go shopping, or on some other such errand. Even though it may seem to be the kindest thing to do for your dog, bringing him with you on your errands can turn from a joyous outing to a life and death situation. Kinder by far, to leave him at home, where he is not susceptible to roasting in a closed car.
However, if you absolutely must bring him with you, bring water for him to drink, leave your car windows wide open, all of them, so a breeze can blow through your car. If you are worried about your dog disappearing, there are window grates that lock into place in an open window to prevent just such a vanishing act. Leave your car running, with the air conditioning on. Look into doggie daycare if you are planning on being gone a full day. Most vet clinics will happily board your dog for the day while you run errands.
Prevention at Home
Dogs don't know when to quit when they are having fun. It is up to us to watch for stress signals (heavy breathing, excessive panting) and put a halt to play when it gets to be too much. Be sure your dog has a cool place to lay down, a well ventilated area in the shade is needed. Water is essential to dogs, never more so during summer heat. Make sure your dog has lots of clean, cool water, within easy reach at all times.