The Hyper-Sloth

The Hyper-Three Toed Sloth stands apart from the common Three Toed Sloth in a most peculiar fashion. While the Common Sloth is famous for slowness, the Hyper-Sloth, from birth to death, never moves of its own accord. It relies entirely on external forces to travel about its territory. How it survives is a complete mystery, because it has never been studied long enough to find out.

This may be due to it's horrible stench and constant giggling like a little girl.