Cats are like witches. They don't fight to kill, but to win. There is a difference. There's no point in killing an opponent. That way, they won't know they've lost, and to be a real winner you have to have an opponent who is beaten and knows it. There's no triumph over a corpse, but a beaten opponent, who will remain beaten every day of the remainder of their sad and wretched life, is something to treasure.