Photographer Christophe Courteau was taking images of mountain gorillas in Rwanda's Volcanoes National Park forest when the group's alpha male charged him. Courteau is a pro: he got the shot of that incoming fist before the punch hit him. The ape was reportedly "drunk" from eating bamboo stems, which ferment in the stomachs of gorillas. Basically, their bodies make their own beer. “In less than a second, he was on me, and strongly hit me like a rugby player. With the shock, I felt all his power and weight on my body," Courteau told Caters News Agency.