Arunachal macaque Arunachal macaque The Arunachal macaque ("Macaca munzala"), a relatively large brown primate with a comparatively short tail, is a macaque native to Arunachal Pradesh in northeastern India. Its species name comes from "munzala" ("monkey of the deep forest") as it was called by the Dirang Monpa tribe. It was discovered as a new taxon in 1997 by the noted Indian primatologist Anwaruddin Choudhury, but he thought it to be a new subspecies of Tibetan (or Père David's) macaque. It was described as a new species in 2004, when a group of scientists from the Nature Conservation Foundation, India reported it.
White-cheeked macaque "Macaca". In terms of outward appearance, it closely resembles the Assam macaque, which is one of the reasons the two were believed to be the same species until recently. The main differences between the two include the presence of white, elongated whiskers on the face of the white-cheeked macaque, which are absent from other species. The whiskers begin to grow as the creatures approach sexual maturity, and eventually cover the whole face, giving the animals a rounded facial appearance. The white-cheeked macaque also grows dense hair along its neck, while not growing any hair along its short tail. Additionally, there