Sloths have no real natural body odor, which helps hide and protect them from potential predators. As a result, their natural smell is a projection of whatever you're feeling at the moment you encounter one.
Ann BurtonBecause sloths' metabolisms are so slow, they don't exhibit many external signs of stress and it can be hard to determine their mood.
Ann BurtonSloths actually are like furry living ecosystems all by themselves! Algae grows on their fur and they are also home to "sloth moths" who call them home and drink their tears.
Ann Burton