The pygmy marmoset (Cebuella pygmaea) is a small species of monkey native to rainforests of the western Amazon Basin. The species is notable for being the smallest monkey and one of the smallest primates in the world with a body length of 5 to 6 inches and weighing only 3 to 5 ounces.
They live in groups of up to 9 members and eat tree gum, insects, nectar and fruit. Females often give birth to twins, which are cared for by both the parents and other group members.
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