Male Gray Langur or Haniman Langur (Semnopithecus entellus) in captivity at the Monkeyland Primate Sanctuary near Knysna, Western Cape, South Africa. Photographed on 19 June 2012.Native of the Indian Archipelago. The Monkeyland Primate Sanctuary is a rescue organisation.www.inaturalist.org/observations/52626073
YIKES, A HUMAN!! Native to Thailand, Malaysia and western Indonesia, where it is known as Beruk. Photo from northeastern Sabah, Borneo.In context at www.dixpix.ca/indonesia/fauna/primates/index.html
The troop of mangabeys would sometimes come down to the ground to feed, groom, and in the case of the younger monkeys play. They put one in mind of a cat when they did so.