If your dog runs away from you and you finally catch up to it, no matter how angry you are at the dog, do not yell or smack it or your dog will never come to you when called for fear of being punished.
Do not leave your dog unattended on a choke chain. The chain could get caught and strangle the dog.
Do not leave your dog in the car unattended on hot days. Even with the windows open, temperatures in cars WILL reach deadly levels. It only takes 5 minutes!