The sagittal crest (especially noticeable in males) supports the large temporal muscles needed to grind coarse vegetation. The head of a gorilla is massive, with a bulging forehead overhanging the eyes and a bony sagittal crest on top (high-domed head). A Texas zookeeper recently introduced her 'sweet. The first set (similar to baby teeth) is lost and then replaced by their permanent set as adults. Zookeeper Mary Kate Findley captured a video of herself introducing her 2-month-old child to the Dallas Zoo's 20-year-old silverback gorilla Juba. Gorillas have two full sets of teeth during their lifetime, similar to humans. Gorillas have large strong teeth adapted for the coarse vegetation they consume.Īdult males develop big, sharp canines as they mature. Gorillas have 32 teeth - the same number as humans. Lowland gorillas have shorter sparse hair whereas mountain gorillas have long and silky hair.Īdult gorillas lack hair on their fingers, palms, soles, nose, lips, ears, and chest. All gorillas over three years of age make both day nests for resting and night nests for sleeping. He regulates what time they wake up, eat and go to sleep. This silver-gray area breaks up their overall dark coloration, creating an optical illusion of increased length and larger size. The silverback mediates disputes and also determines the group's home range. Males acquire silver-gray saddles across their backs and upper thighs at sexual maturity, earning them the name silverback. Gorillas have dark skin and black to brown-grey hair. The elongated arms indicate a tree-dwelling ancestry even though gorillas are now primarily terrestrial (ground-dwelling).Īn adult gorilla's upper body strength is six times more powerful than that of an adult human - enabling them to lift, break, and squeeze heavy objects. Gorillas' arms are much longer than their legs and their arm span is about 30 cm (1 ft.) longer than that of an adult human male. Although capable of walking upright on two feet they most often walk as a quadruped (on four limbs). This is primarily due to the fact that they use their increased arm strength for bending and gathering foliage and for defense. Gorillas have larger muscles in their arms than in their legs (the opposite is true for humans).
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