The diet consists mainly of fruit, especially figs. Various species of figs ripen at different times in the year, and the movement pattern of the animals can largely be explained by their following this process. Bornean orangutans will also eat other kinds of vegetation, such as leaves, bark, buds, and flowers. They will also occasionally eat mineral-rich soil, insects, and possibly eggs and small vertebrates. They drink by reaching into tree holes and lapping water from their hands.
Animal Foods: Eggs; Insects
Plant Foods: Leaves; Wood, bark, or stems; Fruit; Flowers