Surprise, people enjoy websites that make them laugh. lolcats and failblog require absolutely no intellectual investment at all. It's like eating a nice steak

Surprise, people enjoy websites that make them laugh. lolcats and failblog require absolutely no intellectual investment at all. It's like eating a nice steak...it triggers that part of your brain that goes "this is good", but doesn't actually require you to do anything. This does, however, bring up another point...are there any other animals that experience humor?