OK, get ready for a mind-blowing example of how amazing evolution is....

Sloths have algae growing in their fur - fact. Sloths risk predation by always coming down from the trees to poo in the same place - fact. Now this new paper suggests that the reason they poo like this is that their poo heap is the perfect place for a certain small moth to lay its eggs. These small moths hatch from the poo and then find the sloth so they can live (and presumably mate) in its fur. These moths eventually die, and their decaying bodies release nutrients the algae that grow on the fur then use to grow. The sloth then eats the algae, which is super nutritious and fat rich. HOW MENTAL IS THAT?!?!?!