What is the most endangered monkey in world?

It's difficult to definitively say which monkey is the most endangered, as different sources may have slightly different classifications and data. However, some of the most critically endangered monkeys include:

* Golden Monkey (Rhinopithecus roxellana): Found only in China, this species is threatened by habitat loss and poaching.

* Tonkin Snub-nosed Monkey (Rhinopithecus avunculus): Another critically endangered species found in Vietnam, facing similar threats.

* Northern White-cheeked Gibbon (Nomascus leucogenys): Found in China and Vietnam, this species is threatened by habitat loss and the illegal pet trade.

* Javan Langur (Trachypithecus auratus): Endemic to Java, Indonesia, it faces severe habitat loss and hunting.

* Red Colobus Monkey (Procolobus badius): These monkeys are found in various regions of Africa, but many subspecies are critically endangered due to habitat loss and hunting for bushmeat.

It's important to note that many other monkey species are also critically endangered, and the situation is constantly evolving. Conservation efforts are crucial to protect these magnificent animals from extinction.