Head to head
Orangutan vs Chimpanzee
The orangutan and the chimpanzee are both great apes, and both share close to 99 percent of their DNA with us, but they represent two very different ways of being an ape. One is Asian, red, and solitary; the other is African, black, and relentlessly social.
| Orangutan | Chimpanzee | |
|---|---|---|
| Where it lives | Borneo and Sumatra only | Equatorial Africa, forest to savanna-woodland |
| Social life | Semi-solitary; female plus young | Large fission-fusion communities |
| Hair | Long, sparse, orange-red | Short and black, often greying with age |
| Where it spends time | Almost entirely in the canopy | Feeds in trees, travels on the ground |
| Diet | Mostly fruit, tracked across the forest | Fruit, leaves, insects, and hunted monkeys |
| Breeding pace | One young every 7 to 9 years (slowest mammal) | One young every 5 to 6 years |
| Adult males | Flanged and unflanged forms; booming long call | Rank-striving; pant-hoots and charging displays |
| Status | All 3 species Critically Endangered | Endangered |
Orangutan vs Chimpanzee: common questions
Which is more intelligent, an orangutan or a chimpanzee?
Both are among the most intelligent animals alive, and the honest answer is that they are close and hard to rank. Chimpanzees have been studied far more, and they show an enormous tool kit, cooperative hunting, warfare, teaching, and rich social strategy, much of it driven by the demands of living in a big, shifting group. Orangutans are quieter and solitary, which made their intelligence easy to underrate, but wild Sumatran orangutans make and use tools, plan travel routes, and hold detailed multi-year mental maps of when and where trees fruit, and captive orangutans are famous escape artists. Chimpanzees tend to do better on tasks involving social learning and imitation; orangutans do very well on physical problem-solving and patience. Neither is clearly smarter overall.
Why is the orangutan solitary when chimpanzees live in groups?
It comes down to food. Chimpanzees eat fruit but fall back on abundant leaves and pith and add meat by hunting, and they can feed a travelling group in big fig trees, so a social life pays off. Orangutans depend far more heavily on fruit in forests where fruiting is patchy and comes in unpredictable bursts, and a large ape moving through the canopy cannot afford to share a scarce, scattered crop with a permanent troop. So adult orangutans forage alone, though they are not truly antisocial: they recognise their neighbours, tolerate each other at big fruiting trees, and young orangutans travel together for a while before settling into a solitary adult life.
Which is more endangered?
The orangutan, clearly. All three orangutan species, the Bornean, Sumatran, and Tapanuli, are listed as Critically Endangered, the highest risk category before extinction in the wild, and the Tapanuli orangutan, with fewer than 800 individuals in one forest block, is the most endangered great ape of all. The main driver is the clearing and burning of lowland rainforest for oil palm and pulpwood, plus killing and the pet trade. The chimpanzee is Endangered, one step below, hit by the bushmeat trade, habitat loss, and disease, with the western subspecies down about 80 percent. Both are declining, but the orangutan is closer to the edge.