Bornean Orangutan (Pongo pygmaeus) Orangutans are one of the main victims of the loss of their habitat due to the replacement of forests by palm plantations. It could be said that they are becoming "empty-handed". Their territory is only distributed in Borneo and Sumatra, in Indonesia, and they are on the red list of endangered species. According to intelligence tests, the orangutan beats all other primates, including the chimpanzee.