Stashed in: gifs, Flying!, Jump!, Tabby Cats!, Startled Cats
When you frighten a cat it can fly!
When frightened, their concentration is broken and they momentarily forget that they're supposed to be pretending to obey gravity.
Scared Cat Jumping perfect loop:
Kittens scatter: http://pandawhale.com/post/45640/scared-cat-and-kittens-dispersion-gif