Finger Monkey: The Smallest True Monkey.

The pygmy marmoset or dwarf monkey (Cebuella pygmaea) is a quadrupedal New World monkey native to the rainforest understories of western Brazil, southeastern Colombia, eastern Ecuador, eastern Peru, and northern Bolivia, with an altitudinal range of 200 to 940 m.It is most common in river edge forests, but also can be found in secondary forest and moderately disturbed forest.The pygmy marmoset has been viewed as somewhat different from typical marmosets, most of which are classified in the genera Callithrix and Mico, and thus is accorded its own genus, Cebuella within the family Callitrichidae. Pygmy marmosets live 11-12 years in the wild, but in zoos, they live into their early twenties.

It is one of the smallest primates, and the smallest true monkey, with its body length ranging from 14 to 16 centimetres (5.5 to 6.3 in) (excluding the 15-to-20-centimetre (5.9 to 7.9 in) tail). Males weigh around 140 grams (4.9 oz), and females only 120 grams (4.2 oz). Nicknames for this monkey often refer to its diminutiveness, for example: mono de bolsillo ("pocket monkey"), leoncito ("little lion").

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