Orangutans are sexually dimorphic. Head and body length is about 1.5 meters and the arms have a spread of about 2.2 meters. They have a thin, shaggy coat that is reddish brown in color. Males have large cheek pads, which are made up of deposits of subcutaneous fat bound by connective tissue. These cheek pads continue growing for much of an adult male's life.
Orangs have a high, sloping forehead and a bulging snout.
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. 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. Reproduction Female orangutans have an estrous cycle about 30 days in length with ovulation on about the 15th day.