So, why does the 3-toed sloth, unlike the 2-toed sloth, descend from its tree to defecate?

Why take the risk? The risk is only taken maybe once a week, but still: “The sloth is highly vulnerable on the ground and an easy prey for jaguars in the forest and for coyotes and feral dogs in the chocolate-producing cacao tree plantations that it has learned to colonize.” The 2-toed sloth defecates from the tree, so why does the 3-toed sloth descend….

Via Althouse.