The worlds smallest monkey, the Pygmy Marmoset, lives in rainforest canopies of western Brazil, southeastern Colombia, eastern Ecuador and eastern Peru, sheltered in holes in trees. These little primates range from five to six inches long (excluding the tail) and weigh only four and one-half to five ounces.
The Pygmy Marmosets tail is ringed, and when stretched out, is as long as their bodies. Because much of their diet comes from tree sap, their claws are specially adapted for climbing and boring holes into trees. They can spend two-thirds of their time digging out bark and wood fibre in their attempts to reach the gummy sap. The Marmosets incisors are shovel-shaped, designed for gouging holes in trees so they can lick out the sap.
These little creatures are difficult to observe in their natural habitat because of their small size. Researchers are not sure how long they live in the wild; in captivity, they can live from 10 to 11 years. In addition to tree sap, their diet consists of fruit, insects, birds and bird eggs. They live in family groups, sometimes with two males and several females (only one male is dominant and he controls access to the females) and...