Francois' langur in exhibit

Francois’ Langur

Scientific Name
Trachypithecus francoisi
Southern Guangxi province of China, northern Vietnam, and west central Laos
Forests with limestone outcrops
Estimated Wild Population
Francoiss langur in exhibit Endangered Status Graph - Endangered Endangered Status Graph - Endangered

More Information

Adult Francois’ langurs have black fur with a white stripe stretching from ear to ear acros their jawline, as well as a black crest atop their head. Young langurs are orange at birth, which may encourage adult females to care for and keep track of them. These primates, which feed primarily on leaves, have a multi-chambered stomach that helps them get the most out of their low-nutrient diet. Special bacteria lining their stomach also aid the process.

Did You Know?

Francois’ langurs are threatened by logging, agriculture, hunting, and the illegal pet trade.

Females assist in caring for other langurs’ offspring, a behavior called alloparenting or “aunting.”

Males define and defend their territory with hoarse vocalizations.

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We cooperate with other members of the Association of Zoos and Aquariums to manage the zoo population of this species through a Species Survival Plan®.

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