We have a strange fascination with fat cats — not the wealthy members of the modern aristocracy, but rather plus-sized felines who flaunt their curves in roly poly reverie in pictures and online videos. Youtube is littered with hundreds of thousands of videos of overweight pets, including a video of the world’s fattest cats that has over 31 million views. That’s more views than most videos of the president, and approaches Justin Bieber and Taylor Swift levels of ogling devotion.