My hoggie dose this, not to a great extent, and oddly enough only at prekilled, live new born rats... he just sneaks up on them and gobbles them down. But he puts on a dog and pony show when I dangle a pre killed for him. Infact last night he even flattened out his neck a tad cobra style. As long as he is still eating normaly, deficating like normal and the husbandry is fine then you have no worries.