Lioness (IMAGE) Proceedings of the National Academy of Sciences Caption Lioness (Panthera leo) on the hunt in Nairobi National Park, Kenya. Credit Image courtesy of John Rowan. Usage Restrictions None 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.