heavily forested areas, they exhibit sexual dimorphism; males are large in body size whereas the females are smaller (142). Gorillas however, are larger than orangutans as well as chimpanzees.
Chimpanzees are small and has less sexual dimorphism. All three primates are apes, yet their diet and locomotion differ. Orangutans are slow cautious climbers whereas chimpanzees mostly hang out in trees, are active and noisy, while gorillas are quiet and placid (146). Also, chimpanzees eat fruit, nuts, leaves, bird eggs and insects. As you can see, chimps are the smallest of the three and because of their body size they require a bigger diet. According to the text, larger animals require fewer calories per unit of weight than smaller animals because larger animals have less surface area relative to body mass than smaller animals. All three species differ in group composition. For example, some are loners whereas many hunt in groups. There are male and female groups and the females usually travels with their offspring’s being that offspring’s get most of their care from the female, but in polyandrous groups which consist of a single reproducing female and several sexually active males, several of the males usually participate in the care of offspring. There are high ranking groups and low ranking groups and individual ranks are measures by the
primate’s access to resources. For instance, fruits and nuts are seasonal and the primates such as chimps who depend on these resources often are protective of their feeding area. As you can see, all three species differ in many ways and this is what sets them apart from humans and eachother.