Male gorillas sexually mature later in life, between 9-12 years old. A normal, healthy, gorilla may live up to 37 years. They play, sleep, and eat within this structured family group. The group is lead by the old, dominant, silverback male. He regulates what time they wake up, eat, and go to sleep.
Gorillas are most active in the morning.
They wake up just after sunrise to search for food, and then they eat for several hours. During midday, adults usually nap while the young wrestle and play games that to observers resemble games played by human children such as Follow the Leader and King of the Hill. After their midday nap they search for food again. Before dusk each gorilla makes its own nest bed on the ground. Some males become solitary after they have reached adulthood.