A golden monkey eats plants in Volcanoes National Park, northwestern Rwanda, on Dec. 25, 2017. (Xinhua/Lyu Tianran)

VOLCANOES NATIONAL PARK, Rwanda, Dec. 31 (Xinhua) -- Golden monkey is listed as an endangered species by the International Union for Conservation of Nature (IUCN).

According to IUCN, golden monkey has a small distribution range and is found only in the Virunga volcanoes shared by Rwanda, Uganda and the Democratic Republic of the Congo and Rwanda's Nyungwe Forest Reserve, mostly in bamboo and bamboo forest mix.

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A female golden monkey feeds a baby in Volcanoes National Park, northwestern Rwanda, on Dec. 25, 2017. (Xinhua/Lyu Tianran)

A golden monkey eats bamboo in Volcanoes National Park, northwestern Rwanda, on Dec. 25, 2017. (Xinhua/Lyu Tianran)

Three golden monkeys fight in Volcanoes National Park, northwestern Rwanda, on Dec. 25, 2017. (Xinhua/Lyu Tianran)

A golden monkey stays in the forest in Volcanoes National Park, northwestern Rwanda, on Dec. 25, 2017. (Xinhua/Lyu Tianran)

A golden monkey eats bamboo in Volcanoes National Park, northwestern Rwanda, on Dec. 25, 2017. (Xinhua/Lyu Tianran)

A golden monkey stays in the forest in Volcanoes National Park, northwestern Rwanda, on Dec. 25, 2017. (Xinhua/Lyu Tianran)

A golden monkey eats a leaf in Volcanoes National Park, northwestern Rwanda, on Dec. 25, 2017. (Xinhua/Lyu Tianran)