In the summer our pets are particularly vulnerable and need our help. NEVER, EVER LEAVE YOUR DOG OR CAT IN A HOT CAR!!!!! It doesn't matter if the car is parked in the shade, the windows are cracked or that you'll only be minutes. Temperatures in a car can get to 120 in minutes, and nothing can stop the effects on an animal. If you see an animal in a car, do what you have to to save it and call the police.
People who are stupid enough to leave a dog or cat in the car shouldn't ever be able to have a friend, but each of us is responsible for saving any vulnerable animal or child left in a car. Keep you eyes open, you could save a life.