When Thomas Edison was trying to publicize his motion picture cameras, he and his technicians filmed a short movie of two cats boxing. While nothing cruel, it’s a bit odd to see two cats smacking each other with gloves wrapped around their paws. So if you want to see a bit of movie history, you can watch this short video of two boxing cats.
There’s also a site called CatBoxing that offers videos of cats smacking each other in the head and face. None of this is anything cruel but just what cats normally do when they hit each other. If you like the idea of watching cats hit something other than you, you might enjoy watching more of these cat boxing videos.