Sloth
From Memory Alpha, the free Star Trek reference.
The sloth is a small Earth mammal, living in the Amazon. In the mid-22nd century, Hoshi Sato and two other teachers took a hydro-skimmer to visit a tributary in the Amazon. Sato saw sloths, pink dolphins and many kinds of snakes there, which frightened her a lot. (ENT: "Fight or Flight")
