Your veterinarian should be able to recommend a good behaviorist, or an obedience school in your area. The Staff at The Veterinary Teaching Hospital Colorado State University Brandy from Ft. Last weekend we came home from an evening out and the puppy had chewed the bottom backside of our couch. He has also ruined various clothing and plush toys, etc. We make sure to leave him his toys which consist of the indestructible toys named KONG, he has the round one and the flying saucer, but that doesn't seem to be enough.
Any information is welcome.
My two labs also chew on a lot of things, but the key is to provide them with appropriate things to chew since that is what they do when they are bored. I typically make mine the night before and freeze it because it makes it more difficult to get the stuffing out. You may also think about the Buster Cube, available at most pet stores, which holds kibbled food that rolls out as your dog plays with the cube. It is my opinion that puppies greater than 6 months old do not need to be on puppy food, so you could switch him over to an adult formula any time. Do so gradually to avoid a tummy upset.