German shepherds that aren't given an outlet for their energy, however, can become destructive. The owner of a shepherd must always be attentive to prevent the development of this trait. This dog also needs an owner who is willing to work on socializing her with all kinds of people and dogs and continue this training throughout the dog's life. This is a breed that can regress or become less outgoing and trusting if she is not constantly out and about, in the company of others.