Sloths are arboreal mammals noted for slowness of movement and for spending most of their lives hanging upside down in the trees of the tropical rain forests of South America and Central America.
The six species are in two families: two-toed sloths and three-toed sloths.
Despite this traditional naming, all sloths actually have three toes on each rear limb, although two-toed sloths have two digits on each forelimb. which one describes...