http://www.nytimes.com/2006/06/21/nyregion/21cat.html
Who feels threatened by a cat? If it tries to attack you, you just kick it. One kick and it should be game over. If you can't fight off a cat it is time to go to the gym. If you are threatened by an animal that is maybe five percent of your body weight, you need to be extricated from the herd. Time for a little natural selection.