Sloths are nocturnally active mammals found in the tropical forests of South America, Central America and regions containing Atlantic Forest vegetation. Their gray coat has black, brown or white patches and their weight averages 4 to 6 kilos and their length is approximately 70 cm (including their tail).
These animals live in small groups, but have many solitary habits too. Their large claws are used to climb up tall trees, where they may remain for long periods before coming down at weekly intervals to attend to their physiological needs.
Their food consists of leaves, roots and shoots of some tree and fruit species. They hang from trees while sleeping for approximately 14 hours a day. Their gestation period ranges from 120 to 180 days.
A healthy animal will usually live 30 to 40 years. The species uses the sense of smell for orientation since the have a poorly developed visual system. Species are divided into two families: Bradypodidae (three fingers on each arm) and Megalonychidae (two fingers).