The silver marmoset (Mico argentatus) is a small marmoset living in the Amazon Basin tropical rainforest. Its upper body is silver-colored, the underparts are more brownish, and the tail is dark. Head-body length is about 22 cm, weight about 350 g, and the tail is about 30 cm; it moves through the trees using claw-like nails. It eats fruit, tree sap, and insects, and groups consist of 4–11 individuals. Only the dominant female typically breeds; gestation is about 145 days and twins are commonly born. Conservation status: Least Concern (LC).