Testing exactly how the German Guard puppy responds to loud cracking whip as well as some pressure. This can push a pup into either battle or trip. For a pet dog that a police officer may depend on you want to start with the right genetics. If a dog does well on this examination DO NOT push the dog to failure. Allow them win the tug. Side note: Shake cans do not function well for housebreaking this type of puppy:-RRB-.