I was reading random threads and have ran into people talking about their BP's doing things like moving the rat into their water bowl, or just moving it around. I'm not sure why this happens. Are you feeding F/T? If you are, what temperature do you thaw the rat to? I always make sure my rats are about the same temperature that they would be if I had stunned a fresh live one. You could also try buying live hoppers and stunning them before feeding? Maybe your BP is just really picky, and wants to feel the rats heart beat? I dunno xD