This animal is nicknamed the "happiest animal on earth," but what do they have to be happy about? Not much, beyond hanging out with Roger Federer. Find out the meaning of "Rottnest" and learn about the child-sacrificing, lightning-fearing, gorgonzola-choking quokka on this episode of Species.

Bibliography: https://docs.google.com/document/d/1gI4fknlR16jnIiVTwIQB7BrUW1I_oo5lK_QtBm2WN6M/edit?usp=sharing