The problem is not keeping his weight down but up! I have five acres and he fancies himself to be the mighty hunter, so runs all of his weight off. We have a saying at my house "I have pets and if you don't like hair on the furniture don't sit on the furniture, It's called FUR-niture for a reason. You guys should see the little nut job chase the roosters. He is full tilt until the rooster realizes he's bigger than the dog and stops running. Then Kaiser just stop and stares off into space like he wassn't doin nothing.