There's a running joke that the Internet was invented for cat videos. Cats are not only cute, but they're constantly doing something ridiculous that happens to get caught on camera. The resulting videos become moments that bring people across the globe together. Ok, that might be a bit dramatic, but filming cats being weird and sharing it with your friends has been going on much longer than people might think. In fact, the first known cat video was filmed in Thomas Edison's motion picture pro...
