THE PURPOSE OF THE PRE-ATTACK/POUNCE, BUTT WIGGLE???.. I've watched my cats as we play, and everyTime they stalk something, Literally right before they go after whatever it is they are stalking,they do a little butt wiggle!. I know you all must've seen this with your cat, was just wondering if there was just an actual purpose that they do it. Like does it help them calculate the distance they need to pounce maybe? IDK, was just curious on this cute little behavior!!