People like to spend money on their pets. That's obvious, isn't it? There are whole stores dedicated to nothing but treats and toys and supplies for our favorite companions. Joanne, at Ranker.com, has compiled an insane list of 20 insane pet products - things most of us would not be insane enough to buy. Or would we? My favorite from this article is the "Rear Gear. Butt Covers for your Cat and Dog," (I found it at etsy) which comes in many designs including a disco ball, air freshener, heart, flower, biohazard, smiley face, number one ribbon, cupcake, sheriff's badge, dice, and you can even make yours custom.