What's in a Name, Quokka

 The quokka (its name rhymes with mocha) is the happiest animal. They are not only always smiling, but they are also one of the friendliest animals toward humans. Many people outside of Australia had never heard of the quokka, a Muppet-cute marsupial with an irresistible smile.

These social plant-eaters hang out in clans, munch on swamp peppermint and other greens, store fat in their tails for lean times, dig tunnels through vegetation for napping and hiding, and hop like kangaroos, a close relative (along with wallabies).