Gorillas are the largest primate, with average lengths of 150 cm for females and 185 cm for males. They are highly sexually dimorphic, with females weighing 70 to 114 kg and males averaging 160 kg. They have robust bodies, long muscular arms, short legs, massive heads, and males have large, sharp canine teeth. Mountain gorilla coats are silky and long, ranging in color from blue-black to brownish-grey. Mature males develop a large patch of silver or grey hair on their backs, giving them the name silverbacks. Males also have apocrine glands in their armpits that emit a strong odor when the animal is under stress.
Mountain gorillas differ from other gorillas in having longer hair, larger jaws and teeth, smaller nose, and shorter arms.
Range mass: 70 to 200 kg.
Range length: 150 to 185 cm.
Other Physical Features: endothermic ; homoiothermic; bilateral symmetry
Sexual Dimorphism: male larger
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