Here's my theory on why stuff is moved around (Really, he has time to move things from here to there, but not even wrap the leftovers?) He's moving things around because soon you will notice your things "missing", then you will say to yourself, "Oh, Buck must have moved that around." But things will be gone- like the mustard -and moving things around is his cover-up. If you ask him where the mustard is, well, he remembers moving it but he forgets where he put it. Please, he's a thief, hopefully he didn't take too many of your things. I hope he enjoys the mustard.