When I was a kid, we had a Siamese that went crazy on me one day. He was sitting in a tree outside and when I ran past that tree (playing with my brother), he jumped out of the tree and landed on my face. He proceeded to bit, kick and scratch me until my Dad came outside and peeled him off of me.

I don't know what happened that he did that but he didn't get the chance to do it to anyone else. He tore me up good.
My cat that I have now (Jezebel) is a regular terror. She gets into everything! If I leave food of any sort out (bread, lunch meat, cereal), she will chew it open if she can and eat it. Last year, she was going in the crawl space under the house, where snakes happened to have gotten into and bringing them in the house

. When she was younger (and had claws) she was awful for climbing my curtains and shredding them. She also has this weird obsession with plastic bags. If I leave one laying around, she will pee on it. If she gets good and mad at me for something, she will chew on something of mine. She loves to sharpen her 'pretend' claws on things when she's mad at me too. She used to scratch the couch when she was mad. Now that she doesn't have front claws, she goes over and goes through the motions. I just laugh at her and tell her 'Good kitty'. She gets up, scowls and leaves. Not too long ago, she killed a mouse and ate the skin off of it. Then left it on the carpet under the table for me to find (by stepping on it). I could go on and on. . .