Same family, different continents
Orangutans, chimpanzees and gorillas all belong to the great ape family Hominidae, but they live very different lives. The clearest dividing line is geography: orangutans are the only great apes native to Asia, found solely in Borneo and Sumatra, whereas chimpanzees and gorillas are African. For the full orangutan profile, see our orangutan species guide.
How orangutans differ from chimpanzees and gorillas
- Where they live. Orangutans inhabit the rainforests of Borneo and Sumatra; chimpanzees and gorillas range across equatorial Africa.
- Tree versus ground. Orangutans are the most arboreal great ape, spending nearly all their time in the canopy. Gorillas are largely terrestrial knuckle-walkers, and chimpanzees split their time between trees and the ground.
- Solitary versus social. Orangutans are semi-solitary and form no lasting groups. Chimpanzees live in large, dynamic communities, and gorillas live in cohesive family troops led by a silverback.
- Colour. Orangutans are reddish-brown; chimpanzees are black-haired and gorillas are brown to black.
- Size. Male orangutans reach around 90 kg and chimpanzees are broadly similar, but gorillas are far heavier, with silverbacks exceeding 200 kg.
- Breeding pace. Orangutans breed once every 7.6 to 8 years, the slowest of any primate, while chimpanzees and gorillas reproduce more frequently.
Are orangutans monkeys?
No. Orangutans are apes, not monkeys. Like all great apes they lack a tail, have larger brains relative to body size and show advanced problem-solving and tool use. Their reddish hair and Asian range, however, set them apart from every other ape.
Why the differences matter for conservation
An orangutan's solitary, slow-breeding, tree-bound life makes it uniquely fragile when forest is cleared, because populations cannot regroup or rebound the way more social, faster-breeding apes might. All three orangutan species are Critically Endangered. Our partners run the multi-year rehabilitation that orphaned orangutans need; you can back that effort if you wish.
Read the full Orangutan wildlife guide for the facts, IUCN status and conservation context — or donate to WARN to help fund the local partners protecting this species.
