The black lion tamarin[1], also called the golden-rumped lion tamarin, is a lion tamarin native to the Brazilian state of Sao Paulo, almost exclusively in Morro do Diabo State Park.
- Black lion tamarin is almost completely covered with dense, silky black hairs. There are only differences at the rear.
- The buttocks, thighs, and underside of the tail are reddish brown. This gives the primate its common name, the golden-rumped lion tamarin.
- The face of the species is hairless, as are the hands and feet, which are black to dark gray.
- The black lion tamarin’s hind legs are generally longer than the front legs, and the tail is not prehensile.
- All toes have a sharp, crescent-shaped nail used for grasping trees, except for the big toe with a flat nail.
