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The western lowland gorilla is the largest living primate. They have broad shoulders, a muscular neck, as well as  strong hands and feet. Their considerable size enables defense against most potentiel predators and allows them to live in relative safety on the ground. The western lowland gorilla's body is covered by short, thin grey-black or brown-black hair. A gorilla's face has no hair and has a thick supra-orbital bony ridge above the eyes. 

 

Western lowland gorillas can walk for short distances on two legs (bipedalism), however, they generally walk quadrupedally using their knuckles (known as 'knuckle-walking).

 

 

Western lowland gorillas form small, non-territorial harems usually lead by a single, mature male commonly known as the "dominant" silverback. They live in a structured group of between 6-22 individuals usually consisting of one adult male silverback, 3-4 unrelated adult female gorillas and several juvenile / infant youngsters.  The silverback is the dominant figure in the family and regulates the group's schedule.  Western lowland gorillas spend several hours eating in the morning, rest during late-morning and early-afternoon (although young gorillas play with each other while adults sleep) and continue eating in the afternoon until nesting at night starting around 17:00.  While western lowland gorillas are social creatures, the strongest bond ussually takes form between the silverback and his female mates.