Schutzhund tests dogs for the traits necessary for police-type work. Dogs trained in Schutzhund are suitable for a wide variety of working tasks: police work, specific odor detection, search and rescue, and many others. The purpose of Schutzhund is to identify dogs that have, or do not have, the character traits required for these demanding jobs such as a strong desire to work, courage, intelligence, trainability, strong bond to the handler, perseverance, protective instinct, and a good sense of smell. Schutzhund also tests for physical traits such as strength, endurance, agility, and scenting ability. The goal of Schutzhund is to illuminate the character and ability of a dog through training. Breeders can use this insight to determine how and whether to use the dog in producing the next generation of working dogs.