The Golden-headed Langur is a species of primate found in the tropical forests of Southeast Asia. It is a medium-sized monkey, with a distinctive golden-colored head and body. The fur is grayish-brown, with a white underside. It is an arboreal
From Wikipedia
The Cat Ba langur, also known as the golden-headed langur, is a critically endangered species of langur endemic to Cát Bà Island, Vietnam. It is among the rarest primates in the world, and possibly the rarest primate in Asia, with population size estimated at less than 70 individuals.