I once watched my cat do that to some sparrows that were chilling on top of a six foot stone wall. Motherfucker ran all the way up it, then used the last of his momentum to dive down onto a bird, biting down on it's neck in one swift motion before bringing it back down with him as he fell. I swear it looked more like a shark attack than any mammal hunting style. I love cats but holy shit they really are nature's perfect killing machines. Little xenomorphs, one and all