Image Gallery: 25 Primates in Peril
Pygmy tarsier
Pygmy tarsier (Tarsius pumilus), Indonesia. Added to The World's 25 Most Endangered Primates list in 2012.
Javan slow loris
Javan slow loris (Nycticebus javanicus), Indonesia
Pig-tailed snub-nosed langur
Simokobu or Pig-tailed snub-nosed langur (Nasalis concolor), Indonesia
Delacour's langur
Delacour’s langur (Trachypithecus delacouri), Vietnam
Golden-headed lemur
Golden-headed langur or Cat Ba langur (Trachypithecus poliocephalus poliocephalus), Vietnam
Western purple-faced langur
Western purple-faced langur (Semnopithecus vetulus nestor), Sri Lanka
Grey-shanked douc monkey
Grey-shanked douc monkey (Pygathrix cinerea), Vietnam
Sign up for the Live Science daily newsletter now
Get the world’s most fascinating discoveries delivered straight to your inbox.
Tonkin snub-nosed monkey
Tonkin snub-nosed monkey (Rhinopithecus avunculus), Vietnam
Eastern black-crested gibbon
Cao-Vit or Eastern black-crested gibbon (Nomascus nasutus), Vietnam
Brown spider monkey
Variegated or Brown spider monkey (Ateles hybridus), Venezuela