Stock Photo: Mountain Gorilla (Gorilla beringei beringei) silverback adult male, close-up of head and shoulders, yawning, resting in vegetation, Volcanoes N.P., Virunga Mountains, Rwanda

Stock Photo: 4421-18802 Mountain Gorilla (Gorilla beringei beringei) silverback adult male, close-up of head and shoulders, yawning, resting in vegetation, Volcanoes N.P., Virunga Mountains, Rwanda