Sumatran orangutan food choices vary seasonally. Most fruits are only available seasonally and within a limited range. Orangutans follow the fruiting season of local trees, feeding when they are ripe. Figs are one of the most important components of the Sumatran orangutan diet. During dry seasons, when fruit is less available, Sumatran orangutans will consume other vegetation. Fruit makes up about 60% of their diet, with the remainder being young leaves (~25%), flowers and bark (~10%), insects, mainly ants, termites, and crickets (~5%), and an occasional egg.
Animal Foods: eggs; insects
Plant Foods: leaves; wood, bark, or stems; seeds, grains, and nuts; fruit; flowers
Primary Diet: herbivore (Frugivore )