Every cat owner has undoubtedly seen their cat hunch down and wiggle their butts before pouncing. Even though there has been no “formal” research on this cat behaviour, the cat twerk is an integral part of your cat’s hunting stance. It is thought that cats do this in order to press their hind limbs into the ground further to help with traction upon the pounce take off. It could also be a warm up for the pounce. In any event, its definitely delightful to watch.