All cats have a small piece of toast attached to their tummy, butter side outwards, and obviously well-concealed by their fur. The toast always falls butter side downwards, so the cat lands on its paws.
Which of course is the secret to an antigravity and perpetual motion machine all in one. Placing the buttered toast (butter upmost) on the cat's back will cause it to rotate rapidly as the toast and feet both try to face down. At the same time the cat will hover just above the floor since neither will permit the other to be the one that lands on the floor.