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.
Oregon Zoo
Currently anchored by the Zoo's 1959 primate building, the primate forest is undergoing substantial renovation that includes demolition of most of the old primate building. The current primate exhibit features chimpanzees (Pan troglodytes). Following renovation, the primate exhibit will include Red Ape Reserve, a 2010 indoor/outdoor exhibit housing orangutans and white cheeked gibbons, and a new, larger chimpanzee habitat that will replace the primate building.The Oregon Zoo participates in Species Survival Plans for 63 endangered/threatened species, among which are successful breeding programs for endangered Asian elephants, and in recent times, African lions. (The latter was under recommendation by the AZA).