I guess Delilah is a rare exception and always has been...honest to God, she has never chewed..not even in puppy stage, she is 4 years old, she doesn't like to play with toys..won't fetch, never chewed furniture, or any belongings, she WILL chew a bone, but only if it is fresh off a grill and you can smell meat on it! The only behavior problems she's had since a pup, is her digging habbit! I guess she thinks she's a two-legged family member after all!