 The greatest diversity of large mammals is found in the three National Parks, which are designated conservation areas.Akagera contains typical savanna animals such as giraffes and elephants, while Volcanoes is home to an estimated one-third of the worldwide mountain gorilla population.Nyungwe Forest boasts thirteen primate species including common chimpanzees and Ruwenzori colobus arboreal monkeys; the Ruwenzori colobus move in groups of up to 400 individuals, the largest troop size of any primate in Africa.