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The Pygmy Marmoset or Dwarf Monkey is a New World monkey live in the Forrest of western Brazil, Southeastern Colombia, Eastern Ecuador, Eastern Peru and North-en Bolivia. It is one of the smallest primates, and the smallest true monkey having body length ranging from 14 to 16 centimeters (5.5 to 6.3 in) (excluding the 15-to-20-centimeter (5.9 to 7.9 in) tail). Males weigh around 140 grams (4.9 oz), and females only 120 grams (4.2 oz).
Pygmy marmosets live 11-12 years in the Forrest, but in zoo, they live into their twenties. Marmosets often live in groups in adult pairs, ranging from 2-3 members. Young marmosets typically remain in the group until after 2 birth cycles.
