[Cha Cha]

I was raised around Boxers, and I would say that most of them were very active and liked to chew. They do grow out of it somewhat but it does take time and training. They might want to have his teeth checked. I know some teeth aggrivations cause them to want to chew because it soothes the pain. Also, if this dog is as aggressive at chewing as you say, maybe they need to keep a leash on him at all times and do some behavior modification when he tries to chew on something that is inappropriate. Chewing can also be a sign of boredom. Maybe he needs a job to keep his attention focused on. Boxers are one of my favorite breeds. I love them to pieces but they do take a lot of time and patience.