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 880 individuals. The International Union for the Conservation of Nature mentioned illegal hunting in its assessment of threats to the species.