The animal lives mostly on fruit, young leaves, bark, small vertebrates, bird eggs and insects.
Daytime is spent looking for food and every night the animal builds a new nest about 12 to 18 meters above the ground.
Their life expectancy in the wild is approximately 35 years. Orang-utans live in the tropical forests, lowland forests, tropical swamp forests, and tropical health forests of Borneo and northern Sumatra. About 80 percent of the orang-utan's habitat has been deforested in the past 20 years.
Orang-utan population will be extinct in a decade unless poaching and habitat destruction can be stopped. With losses running at a thousand a year, numbers have plummeted from 12,000 in 1993 to just 6,000 today.