Mammal groups (IMAGE) Arizona State University Caption (Clockwise from upper left) Impala (Aepyceros melampus) in Kruger National Park, South Africa. Lions (Panthera leo) in Laikipia, Kenya. Elephant (Loxodonta africana) and waterbuck (Kobus ellipsiprymnus) in Kruger National Park, South Africa. Vervet (Chlorocebus aethiops) in Awash National Park, Ethiopia. Credit John Rowan Usage Restrictions Images to be used in conjunction with this research only. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.