The largest primate in the world is the eastern gorilla, specifically the mountain gorilla subspecies. Adult male mountain gorillas can weigh up to 485 pounds and stand about 5'5" tall when upright. They inhabit the mountainous forests of central Africa, primarily in Rwanda, Uganda, and the Democratic Republic of the Congo. Mountain gorillas are known for their strong social structures and live in groups led by a dominant silverback male. Conservation efforts have been essential to protect these majestic animals, as they are classified as critically endangered due to habitat loss and poaching.