TIP #1: TEACH GOOD CHEWING CHOICES
Audition a range of chewies until you find the ones that most appeal to your dog. Dogs have texture preferences, so try to match what yours like. If he is attacking the couch pillows, try giving him plush toys. If he is eyeing the table leg, try a bone. Praise liberally when your dog chews something allowed.
TIP #2: REPLACEMENT BEHAVIORS
To fix nuisance behaviors train and reward an opposite or competing behavior. For example, Rowdy can't jump on Grandma if he's sitting to greet her. He can't bark at visitors if he has a toy in his mouth, or beg at the dinner table if he is in a down-stay on his bed, or pull on his leash if he's by your side making eye contact every five seconds. Whatever bothersome behavior the dog is engaging in, think of something that would preclude it, and train that behavior consistently.
- excerpted from Decoding Your Dog
Jeff Dentler, CPDT-KA, FFCP, CTDI