The Bornean orangutan (Pongo pygmaeus) is now critically endangered according to the International Union for Conservation of Nature (IUCN).
Now two species remain, the Bornean orang-utan (pongo pygmaeus) and the Sumatran orang-utan (pongo abelii).
Despite their declining population, field research on the Bornean (Pongo pygmaeus) and the Sumatran (Pongo abelii) orangutans still yield fascinating data.
Orangutan (Pongo pygmaeus), ( Malaysian: "person of the forest") also spelled orang-utan, the only Asian great ape, found in lowland rainforests on the Southeast Asian islands of Sumatra and Borneo.
In one experiment bonobos (pygmy chimpanzees, or Pan paniscus) and orangutans (Pongo pygmaeus) first learned how to use a plastic tool to obtain a reward (grapes) from a container in a test room.
Since the orangutan (Pongo pygmaeus) is more distantly related, some taxonomists include the African apes in the family Hominidae, therefore demoting the ancestors of humans and their close relatives to subfamily or tribal levels of classification.
The soulful Bornean orangutan (Pongo pygmaeus) is a consummate acrobat, swinging with ease through the canopy of its rainforest home.
We investigated the planning abilities of captive orangutans (Pongo pygmaeus) and bonobos (Pan paniscus) using the paddle-box.
Two orangutan species are officially recognized; one inhabiting Borneo (Pongo pygmaeus) and the other Sumatra (Pongo abelii).
From the family Hominidae (3629 hairpins), Gorilla gorilla (ggo, 352), Homo sapiens (has, 1881), Pan paniscus (ppa, 88), Pongo pygmaeus (ppy, 642), Pan troglodytes (ptr, 655), and Symphalangus syndactylus (ssy, 11) were acquired.
Exact randomization methods were used to compare the differences between pairs of fossil skeletons to the differences observed between all possible pairs of individuals within large samples of Gorilla gorilla, Pan troglodytes, Pongo pygmaeus, and Homo sapiens.
