

At dusk, sleeping takes place in nests individually constructed of leaves and branches either on the ground or in trees. Daily group activity is led by the silverback who also protects the group from intruders with intimating behavior such as vocalizations, chest beating and charging. At sexual maturity males and females leave their natal troop to seek mates. Family groups are made up of a dominate male silverback, several adult females, their offspring, and one or more sub-adult males called blackbacks. Troop size averages five to ten but can be up to 30 individuals. Western lowland gorillas are non-aggressive, social great apes (group of primates including orangutans, chimpanzees and bonobos) living in family groups called troops. Gorillas are also hunted for bushmeat by humans. The only threat from a wild predator is the leopard. Water is primarily derived from vegetation.Īt the zoo: Vegetables (including lots of celery), greens, browse, alfalfa, low starch biscuits and small amounts of fruit. In their historic range: Primarily herbivores that consume large quantities of leaves, roots, shoots, pith, bark and fruit. Strong jaw muscles are attached to a bony ridge (sagittal crest) on the top of the head, especially large in mature males.Muscular arms are much longer than legs.

#Western lowland gorilla map skin
Skin is black and body hair is black with a brownish/grey tinge.Western lowland gorillas are four and a half to five and a half feet tall (1.4-1.75 m) when standing on their two legs.Tufts of white hair on baby gorilla bottoms allow mothers to see them in the dense forest.As diurnal animals (active during the daytime), gorillas rely on keen eyesight with excellent depth perception and color vision.Stomachs are larger than chests due to enlarged intestines needed to digest cellulose in plants.A bony sagittal crest on top of the head supports strong jaw muscles and teeth to grind coarse vegetation.Opposable thumbs and big toes allow for climbing and grasping and manipulating objects.Communicates with over 20 vocalizations, including roars, grunts, whistles and barks.Primarily terrestrial, gorillas walk on all fours by curling their fingers under and walking on their knuckles, called knuckle walking.
