Another aspect, the more destructive kind, comes from the 6 to 12 month old pup who's jaws are in the latter stages of development. Because of this tenderness, the dog will be more apt to use furniture to relieve the soreness.
Other tendencies to chew result from loneliness or anxiety. A dog that is left alone for long periods of time in an unstimulating environment will chew out of boredom as will a dog who is frustrated or stressed. And the dog who is left alone will make this behavior compulsive, since there is no one there to correct him. Correcting a dog after the fact will not produce positive results, so if you return home and find that he did something bad while you were gone, then any corrections will be futile and may cause future anxiety in the dog. Which is why crate - training is so important during puppyhood or when dog cannot be trusted. No, the dog does not remain in the crate for hours on end for the rest of his life. The crate is a training tool only, until he has been trained properly.
Introducing the crate should always be done in a positive manner. Never use the crate for punishment. This is your dog's den - he or she should be happy and secure when inside. If you must crate the dog out of anger or frustration, do so in a pleasant manner. Don't take it out on him, or he may become fearful of the crate. Confine the dog in his crate whenever you are unable to supervise his activity, and never leave pup in there for more than four hours at a time. It is preferable to take pup out, water and/ or feed, play with for a half hour at the same time every day, at two hour intervals, to get the pup on a schedule. The more constitent you are in getting him on a routine, the more efficient the results, in most cases. Click here for more on crate -training.