Imagine, if you will, a world without cats. Can you picture it? YouTube probably wouldn't exist because there'd be no cat videos to watch, dogs would have nothing to be scared of and would become insanely confident as a result, and humans would have nobody to puke in their slippers and claw their face in the middle of the night for no particular reason. Kind of a terrifying prospect, right? Fortunately for us however, cats do exist, and the world is a much funnier place because of them. Check out this list of cats on Tumblr, compiled by Bored Panda, to see what we mean, and don't forget to vote for your favorite!