The brown-mantled tamarin is a species of primate native to which part of the world?

The brown-mantled tamarin ('Leontocebus fuscicollis'), is a species of saddle-back tamarin. This New World monkey is found in the South American countries of Bolivia, Brazil and Peru.

This primate species is found predominantly in the Andes Mountains throughout the Amazon River Basin, they tend to inhabit primary and secondary lowland tropical forests. The brown-mantled tamarin typically remains at a lower altitude of the canopy than other species of primates.

The brown-mantled tamarin has an average height between 8.1–9.1 in (210–230 mm) and an average body weight between 348–456 g (12.3–16.1 oz). Sexual dimorphism is not pronounced in this species. Both females and males have long non-prehensile tails which are between 5–12 in (130–300 mm) long. They usually have a life expectancy of between 8 and 13 years but some have been reported to live up to 25 years in captivity.

This species eats both plant and animal matter, feeding on fruits, flowers, nectar, eggs, and smaller animals including snails, lizards, tree frogs and insects. The brown-mantled tamarin specifically enjoys tree sap in the late dry season and early wet season. In order to access the plant exudates, they utilize pre-existing holes made by other primates, primarily the Pygmy marmoset rather than creating a hole themselves.