Mountain Gorilla Infant, UgandaWhen speaking of humans, the term infant usually means up to one year old, but with mountain gorillas, an infant is classified as any individual up to there and half years old. After that they are classified as juveniles until the age of six. We saw this infant on our August trip to Uganda. He was playing on the ground only a few feet away when he suddenly started racing up that tree. Nikon Z8 with Nikkor 24-70mm lens (at 39mm) ISO 900, f/2.8 at 1/640th of a second.