African Gorillas (lowland and Mountain gorillas) are the largest apes. Adult males are 5½- 6 feet (1.7-1.8 m.) tall and have 9-10 foot (2.7-3.0 m.) arm spans. They have massive heads with heavy, thick muscles on top that are used to close crushing jaws. Their bodies are stout and very muscular.
They are shy, peaceful vegetarians rarely fight even among themselves. They live in family groups consisting of a dominant adult male with several adult female mates and their children. Mature males tend to also leave their groups and establish their own troops by attracting emigrating females. However, male mountain gorillas sometimes stay in their natal troops and become subordinate to the silverback. These groups grow to over 20 or more individuals. Subadult males are tolerated in the family as long as they are not actively competing with the dominant male for mates.
Chimpanzees are members of the Hominidae family, the two chimpanzee species are the closest living relatives to humans than the gorillas. Chimpanzee, sometimes colloquially chimp, is the common name for the two extant hominid species of apes in the genus Pan. The Congo River forms the boundary between the native habitats of the two species. Chimpanzee natural habitat includes both tropical forests and bordering savannas in Africa.
Male chimps grow to 5½ feet (1.7 m.) tall and average about 100 pounds (45 kg.) with 6 foot (1.8 m.) arm spans, while females usually grow to around 82 lbs. (37 kg.) and are less muscular. Chimpanzees are comfortable walking quadrupedally on the ground in addition to climbing in trees. They are knuckle walkers like gorillas.
Chimpanzees live in fluid societies of 10-50 individuals without monogamous mating bonds. Membership changes through time as females move from one community to anotherapparently seeking new mates. In contrast, males usually stay together in their natal community throughout their lives and act as a group in defending the food resources of theirterritory against incursions by other chimpanzee communities. These interactions can be quite noisy, violent, and sometimes fatal.
Chimps are intelligent animals with generally pleasant personalities. However, the males are less peaceful than the smaller females. This behavior difference is typical of most primate species, including humans. Chimpanzees make tools and use them to acquire foods and for social displays; they have sophisticated hunting strategies requiring cooperation. Chimps communicate in a manner similar to human nonverbal communication, using vocalizations, hand gestures, and facial expressions. The chimpanzee diet is usually at least 90% vegetarian. although chimp hunting skills are relatively poor, Males chimpanzees like in most cases to eat meat than females,
The bonobo, Pan paniscus, formerly called the pygmy chimpanzee and less often, thedwarf or gracile chimpanzee, and one of the two species making up the genus Pan.Bonobos are claimed to be more neotenized than the common chimpanzees, taking into account such features as the proportionately long torso length of the bonobo. Bonobos are sometimes referred to as pygmy chimpanzees. Despite this name, they are only slightly smaller than the common chimps. Bonobos usually have blacker hair with tufts at the side of their faces, longer arms and legs, as well as slimmer bodies. Their high pitched vocalizations are also quite different from those of the common chimpanzees.