A distraction, of some sort, including but not limited to a bird, a dry shot, poison bird, a person moving, talking, yelling or walking, etc. that may throw a dog off his course on a mark or blind. Tests switching, or dropping. Tests a dogâ€(tm)s concentration. Develops trust between the handler and dog in that the dog must trust the handlerâ€(tm)s ability to direct him to the proper retrieve.