 Don't go there. Always have water available. Don't leave them outside for too long. Make sure there's plenty of shade. Don't walk them in the middle of the day. Never leave them in your vehicle, even if it is parked in the shade and the windows are down. Never leave your dog or a child in the car, right? And the other thing, like I said, they'll run and run and run until they can't do it anymore. Been there.