2017, Jennifer S. Holland, For These Monkeys, It’s a Fight for Survival., National Geographic (March 2017)http://www.nationalgeographic.com/magazine/2017/03/macaques-monkeys-indonesia-endangered-pet-trade/ Yaki have just one natural predator, the reticulated python, but they have many enemies. Land clearers are pushing the monkeys around. Roadbuilders are hemming them in. And outlaw trappers have them running for their lives.
Source: wiktionary