The Vietnamese golden monkey, also known as the Rhinopithecus avunculus, is a rare primate found primarily in the forests of Vietnam. This species is characterized by its striking golden-orange fur, black face, and distinctive long tail. They are arboreal, meaning they spend most of their time in trees, and are known for their social behavior, living in groups called troops. These monkeys primarily feed on leaves, fruits, and flowers, playing a crucial role in their ecosystem by aiding in seed dispersal. The Vietnamese golden monkey is classified as endangered due to habitat loss and poaching, making conservation efforts essential for their survival.