Mystery of the Pooping Sloths: Part One

Sloths digest their food very, very slowly.  They only go poop one time per week!  And when they do, they can drop 1/3 of their body weight in one go.  

When a sloth has to go, it climbs all the way down to the base of the tree to go poop.  For a slow-moving animal, being on the ground is not the safest place to be.  So why would a sloth go all the way down to poop?

Watch this video for a few theories, and then stay tuned for part two!