Sloths have little reason to leave the safety of the rain forest canopy, but once a week the sluggish mammals descend to the base of their favorite tree in order to defecate. This puts them at risk of being attacked by predators.
The exact reason why sloths make this dangerous journey is still a mystery, but researchers believe that it may help maintain the algae gardens in their fur.
Check out 11 other lesser known sloth facts.
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