The doorbell rings, and the four-legged chaos bursts in the form of hysterical barking and skidding towards the door: Many dog owners are familiar with this painful scenario. A relaxed reception of guests is out of the question, and in the worst case, it becomes increasingly lonely over time. Here is a concrete training program that will help you permanently change your dog's behavior so that he becomes a polite four-legged host, and friends or family will be happy to visit again.