The Bornean orangutan is a species of orangutan endemic to the island of Borneo. Together with the Sumatran orangutan and Tapanuli orangutan, it belongs to the only genus of great apes native to Asia. Social Interactions. Orangutans are generally non-aggressive toward humans and each other. Many individuals reintroduced into the wild after having been in managed care are aggressive towards humans. Male-male competition for mates and territory has been observed between adults. A century ago there were probably more than 230,000 orangutans in total, but the Bornean orangutan is now estimated at about 104,700 based on updated geographic range (Endangered) and the Sumatran about 7,500 (Critically Endangered).Fully developed males weigh 200 to 250 pounds and average 54 inches tall. Fully developed females weigh around 80 to 120 pounds and average 45 inches tall. Orangutans have an arm span of approximately 8 to 9 feet.

Order: Primates 

Total Number: just over 100,000

Habitat: forests of Sumatra and Borneo 

Predators: humans, tigers, and clouded leopards 

Family: Hominidae 

Adult Size: Male: 0.97 m (3.2 ft.) Female: 0.78 m (2.6 ft.) 

Kingdom: Animalia 

Population: 45,000 to 69,000