All dog breeds were developed with a specific purpose in mind. The retrievers and terriers bred for sporting and the herding and working breeds all retain levels of the inherent drives that made them suitable for the tasks they were bred to perform. Acquiring a dog strictly for looks or image without taking these breed characteristics into account can lead to problems. A dog with extremely high levels of pent-up energy can become difficult to live with. Destructive behavior occurs because the dog must vent his energy.
Destructive chewing is the most common avenue for release of trapped energy.
Chewing soothes the dog's adrenal system in much the same way a smoker's cigarette provides relaxation to its user. Digging stimulates the dog's curiosity and helps tire the dog as well. It is not unusual to observe bursts of energy where the dog runs in what appears to be a mad frenzy around the house, leaping over furniture, bowling over anything standing in their path, and generally creating chaos in the process. Dogs with too much stored energy may also bark too much. Prevention is the best cure.