Destructive chewing is a behavioral problem and needs training to overcome.
Puppies and grown dogs may exhibit this problem. Puppies may chew out of boredom, to expand their energy, teething or out of curiosity. Grown dogs chew because of stress, separation anxiety, fear, phobia, social isolation, boredom, attention seeking or playfulness. For a puppy, you can puppy-proof its confined area. Remove all tempting objects.