Winston is an 11 month old Blenheim boy. He is healthy as can be and has a fairly normal appetite. He is very playful, etc. with no outwardly-obvious issues, except for the fact that he is EXTREMELY destructive.
He has chewed multiple walls (at corners) down through the drywall to the metal beneath it, doorframes and wooden doors, corners of coffee and end tables, and most recently, the upholstered corners of our new king size bed frame.
I have tried using Bitter Apple, disciplined him when I've caught him in the act, etc... nothing seems to work. I don't know if we aren't walking him enough, or if he has anxiety issues when my wife and I aren't home (he isn't alone, he has cats to play with) or what, but we are at our wits' end. Any advice or comments would be appreciated.