Today the Patterdale Terrier is not only a working dog but also a companion. He successfully competes in agility and obedience competitions. A quick-witted dog quickly grasps information and instantly understands what the owner wants from him. But, like any terrier, he can be wayward and stubborn. Therefore, it is so important to find an approach to the dog so that it can trust the handler one hundred percent. The Patterdale Terrier rarely makes contact and is suspicious of all strangers. He can be an excellent guardian and protector of the home and family. The qualities necessary for this are in his blood.