Since I've been SO tired lately, and moving at a sloth-like pace, this seemed appropriate. Sloths are so slow and can be so sedentary that algae will grow on them. It gives their fur a greenish tint, that actually serves as a good camouflage living amongst the trees. They are unique within the mammal group in that they have an extra vertebrae in their neck, which allows them to turn their head nearly 270 degrees....zzzzzzzzzzzzzz...I......zzzz....AH! Ok off to bed.