Orangutans, which share 96.4% of humans' genes, have a very low reproductive rate. Females give birth to one infant only every 3 to 5 years.
The orangutan is Asia's only great ape, and a series of agricultural plantations are steadily reducing their habitat.
Orangutans are slow and large, which has made them easy targets for humans. People kill these animals either for food or in retaliation when orangutans are spotted in agricultural areas.