The average lifespan is 35 years for wild orangutans and around 60 years when kept in captivity. Male orangutans can weigh as much as 200 pounds, whereas females average around 90 pounds.
Orangutans are easily distinguished from other apes due to their reddish hair, stout bodies and short legs. Similar to other apes, orangutans have opposable thumbs that allow them to easily grasp trees, food and other objects. These apes thrive on diets consisting of high amounts of fruit, bark, bird eggs and grubs. These foods are often scarce, which leads most orangutans to lead solitary lifestyles to eliminate competition for food.