Eastern gorilla
The eastern gorilla ("Gorilla beringei") is a critically endangered species of the genus "Gorilla" and the largest living primate. At present, the species is subdivided into two subspecies. Grauer's gorilla, formerly known as the eastern lowland gorilla ("G. b. graueri") is more populous, at about 3,800 individuals. The mountain gorilla ("G. b. beringei") has only about 1000 individuals. The International Union for the Conservation of Nature mentioned illegal hunting in its assessment of threats to the species.
Orangutan
The three orangutan species are the only extant members of the subfamily Ponginae. This subfamily also included the extinct genera "Lufengpithecus", which lived in southern China and Thailand 2–8 mya, and "Sivapithecus", which lived India and Pakistan from 12.5 mya until 8.5 mya. These apes likely lived in drier and cooler environments than orangutans do today. "Khoratpithecus piriyai", which lived in Thailand 5–7 mya, is believed to have been the closest known relative of the orangutans. The largest known primate, "Gigantopithecus", was also a member of Ponginae and lived in China, India and Vietnam from 5 mya to 100,000 years ago.