Gorilla
Gorillas are ground-dwelling, predominantly herbivorous apes that inhabit the forests of central Sub-Saharan Africa. They are classified in the genus Gorilla which is divided into two species: the eastern gorillas and the western gorillas (both critically endangered), and either four or five subspecies. They are the largest living primates. The DNA of gorillas is highly similar to that of humans, from 95 to 99% depending on what is included, and they are the next closest living relatives to humans after the species of "Pan"; the chimpanzees and bonobos.
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.