I like having pets. I'm currently petless, but at one time I had a cat with a similiar predilection for attacking television screens and computer monitors. My brother shared this video with me and it brought back some fond memories. My cat died before World of Warcraft was released so he never got the chance to attack a flying mount, but he would have enjoyed it.
Warning: It is very cute and, in fact, it comes dangerously close to being "too cute." You have been warned.