Orangutan male success not due to dominance alone, study finds

In primates, the biggest, bossiest males usually get to father the most offspring; and for a long time it was thought that this rule applied to orangutans too. Male orangutans openly compete; and it's the older males with hefty cheek pads, known as "flanges," who usually get their way when they want to mate. But for wild orangutans, nobody knew for sure which males actually won the ultimate prize of fathering offspring.