The relative sizes of the characters change greatly between scenes. For example, Grabovszky easily fits inside a glass bottle dropped from a plane by rats (who are the same size as the cat pilot in that scene), but when the rats fight Grabovzsky they are almost his size; the cat hijackers on the plane are not much bigger than mice, even though in most scenes the cats are huge compared to mice; when Miguel drinks blood from a female cat, he's about her size, even though vampire bats are the size of a mouse in most scenes; and so on.