DWARF HIPPO (IMAGE) University of Cincinnati Caption Researchers conducted an isotopic analysis on the bones of extinct dwarf hippos and learned that they preferred sedges and leaves to grass. Credit Karen Samonds Usage Restrictions None License Original 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.