Characteristically, Orangutans have a common ape-like build, shaggy reddish-brown fur and highly functional arms and legs. Widely regarded as the largest tree faring mammal, they are equipped with an enormous arm-span of 7 feet(males) and have exceptionally powerful arms and hands. While both genders have hanging sacs from their throat, the male's grow much larger with age. These sacs inflate to emit vocalizations that act as either a mating call or a warning. Such calls can even be heard from half of a mile away. They are highly intelligent creatures that imitate humans, use tools and effectively teach fellow Orangutans vital life skills. Orangutans even have the mental capacity to learn sign language!
Orangutans institute a variety of positive contributions to their ecosystems. Their preference for plants indicate that they are primary consumers. However, because they infrequently consume bird eggs and insects they