How aggressive are orangutans compared to other apes?

The Chimpanzee is way more aggressive and dangerous than a Gorilla. Chimpanzee's are omnivores, Gorilla's are herbivores. Chimpanzees are known for attacking and killing other Chimpanzees, sometimes eating them. Gorillas will trade blows with other Gorillas, but in reality, aren't interested in killing them. read more

Orangutan. There are also two species of orangutan. Pongo pygmaeus is known as the Bornean orangutan. Pongo abelii is known as the Sumatran orangutan. Orangutans are native only to Asia, specifically Indonesia and Malaysia. This ape spends very little time on the ground; living primarily in the trees. The are the most tree-living among the great apes. read more

Like other great apes, female orangutans enter a period of infertility during adolescence which may last for 1–4 years. Female orangutans also have a 22– to 30-day menstrual cycle. Gestation lasts for 9 months, with females giving birth to their first offspring between the ages of 14 and 15 years. read more