Two-toed sloths have been called the slowest animals on earth. Ranging in length from 21 to 29 inches, Choloepus didactylus is roughly the size and shape of a small dog. The body is composed of a short neck (only 6-7 vertebrae) with four long limbs of equal length, ending in two curved claws. The head is short and flat, with a snub nose, rudimentary ears, and large eyes. Choloepus didactylus are covered in long brownish-grey hair that curves from stomach to back, opposite that of most mammals. A unique feature of this fur is that each strand has grooves which collect algae, giving the sloth a greenish tint and camouflaging it from predators. The teeth of the two-toed sloth are small, simple molars that are continously growing but constantly ground down by the mastication of food. To compensate for a lack of sharp teeth, Choloepus didactylus has hardened lips which act to shear and crop leaves.
Central America and northern South America, including portions of Brazil and Peru.
Choloepus didactylus feed primarily on vegetation, including berries, leaves, small twigs, and fruits, cropping the leaves with their lips.
Choloepus didactylus is found in tropical moist lowland and montane forest.
Classified as Least Concern (LC) on the IUCN Red List (August, 2010)
Females of this species of sloth reach sexual maturity at 3 years of age, males reach sexual maturity between 4 and 5. After a gestation period of six months, females give birth to one offspring each year. When the young are born they are 10 inches in length and weigh 12 ounces. They cling to their mother's belly for 5 weeks until they have the strength to move on their own.
Update : 11 April 2017