"Marcel" the Mountain Gorilla
As far as I know, this is the only detailed image showing a Mountain Gorilla actually beating his chest. Note his fingers indenting his flesh. Our visit occurred early on, when people first started visiting the mountain gorillas in the Virunga Mountains.The guides had named him Marcel.The gorillas were then not acclimated to visitor presence, and this alpha male came charging down the narrow forest path towards us on all-fours. Our guide, who had already advised us to stand perfectly still, kept whispering: "Don't move! Don't move!" (The penalty for fleeing might have resulted in the gorilla's taking a large bite out of the fleeing guest's rear end). The gorilla stopped about 10 feet from us, and we just stared at each other for a few minutes, and then he finally walked, on all four's, back into the bushes. Gorillas are exclusively herbivores. [Virunga Mts., The Democratic Republic of the Congo (formerly called Zaire)].