Maximitas, the oldest of the two cats I share my house with, doesn't really have any true aggressive moves. He's somewhat of a coward. However, he's learned that if he makes THIS particular expression and looks at my other cat for an extended period of time, my other cat will eventually leave to avoid a battle. Sometimes Max will actually lift up his paw as though he's going to fight, but he's not very good at it. I was looking over my other cat's shoulder to get this picture. Max would never make this expression at ME. :)