It imposes by its posture and its look but the gorilla is a harmless animal. This grayish frugivorous mammal appears forming a line in the middle. This is why it is also called silver back. With its size of around 185 cm and its weight of 160 kg, the gorilla is the largest and strongest of all monkeys. His longevity is around 45 years, he lives in a group like a family, and as in any family, the oldest is in charge. It is a threatened animal, it is highly sought after for its expensive skin.