Eastern gorilla
There are two recognised subspecies of eastern gorilla: the mountain gorilla ("Gorilla beringei beringei") of the volcanic slopes of Rwanda, Uganda and eastern Democratic Republic of Congo; and Grauer's gorilla or eastern lowland gorilla ("Gorilla beringei graueri") in eastern Democratic Republic of Congo.
Cleveland Metroparks Zoo
Opened originally as the Primate & Cat Building in 1975, the Primate, Cat & Aquatics Building houses one of the largest collections of primate species in North America, including western lowland gorillas, New World monkeys, aye-ayes, and several species of lemur. However, the building does not house the Zoo's entire primate population; numerous primate species can also be found in the RainForest. In 1985, the Cleveland Aquarium permanently closed and donated its collection of exotic fishes and invertebrates to the Metroparks Zoo. A section of the Primate & Cat building was renovated to accommodate the new Aquatics section, which currently features 35 salt- and freshwater exhibits including a variety of sharks, piranhas, a giant Pacific octopus, electric eels, and hundreds of living coral.