I recently adopted a Labrador Retriever from a local shelter and I'm quickly finding out that he's somewhat destructive with things around my house. He chews on things and has already destroyed some of my furniture. It seems like he's okay when I'm in the room with him, but when I leave the room, he takes it upon himself to rip things up and ruin things. I do have two other dogs that I adopted before this one and they're fine. I've never owned a Lab before though. He does play well with my other dogs. My cats - not so much. They don't like him and he's finally getting the message to avoid them. He's already fixed and house trained, which is good. I'm afraid that I can't exercise him as much as he needs and that this might be the reason he is acting out. Does anyone have any advice for me? Do I need to re-home my dog? What can I do? Why do you think he's being destructive and acting out?