Hehe! My cat will purr after attacking my brother, she lovly to punce on hif feet and then, like I said, will also purr when I'm yelling at her. she thinks it's funny when I'm waving my arms around! but then she always comes out as a sweety. and don't think that just any times she attacks him ever day or so. She dose it 14 times and day! maybe more cuse she will do it every time she gets the change!