Western lowland gorillas are native to several areas of Africa including Angola, Congo, and Cameroon. This is the type of gorilla that is frequently seen in zoos. The western lowland is the smallest of the great apes. Adults are about 5 feet 7 inches (1.7 meters) tall and weigh 400 pounds (180 kg). As of 2008, there were an estimated 125,000 western lowland gorillas living in Africa.