Train your dog to obey a wide range of commands such as sit or stop.Teach your dog commands and let him learn basic hand movements while whistling different times for each command. Use the whistle to prevent and control unnecessary and excessive barking.Prevent annoying misbehaviours such as digging and chasing. PERFECT SIZE - Our fantastic whistle is Small and Lightweight with BIG performance and results! The dog whistle\'s was made of copper it will have a very long lifetime.