The problem is he's just so lethargic. He gets excited to go outside of course, but at home he just lays around and does nothing, not even with his toys.
He only wags his tail when one of us gets home, he's always with his tail hanging low. We both don't know what to do. We're just so worried
Edit: I thought about the loud noise. If it was because of that, shouldn't the shaking have stopped, or at least, winded down by now? :s