God did a nice job with the peacock and koala, but when it comes to these three, there seems to be a lapse in standards.
We know almost nothing of the Goblin Shark except that it detaches its jaw so it can chase fish when the body is too lazy.
Although cursed with a less-than-beautiful exterior, the octopus redeems itself by being the smartest known fish, able to defeat your terrier or calico in a game of chess.
The naked mole-rat eats its own poopy. How in the world do these guys and gals possibly find a date for a Saturday night?