what do they feed on?
Fruit, primarily.
Orangutan
Orangutans are primarily frugivores (fruit-eaters) and 57–80% of their feeding time is spent foraging for fruits
what is an orangutan? It is a great ape native to Indonesia and Malaysia. where from the name originates? It comes from the Malay words "orang", meaning "man", and "hutan", meaning "forest".
wiki:25665629
Orangutan [SEP] Diet and feeding
Orangutans are primarily frugivores (fruit-eaters) and 57–80% of their feeding time is spent foraging for fruits. Even during times of scarcity, fruit can still take up 16% of feeding. Orangutans prefer fruits with soft pulp, arils or seed-walls surrounding their seeds, as well as trees with large crops. Figs fit both preferences and are thus highly favoured, but they also consume drupes and berries. Orangutans are thought to be the sole fruit disperser for some plant species including the vine species "Strychnos ignatii" which contains the toxic alkaloid strychnine. Orangutans also supplement their diet with leaves, which take up 25% of their foraging time on average.