Pleistocene Hippo (IMAGE) Duke University Caption Saber-tooth cats (Smilodon) working together may have been capable of taking down juveniles of the largest Pleistocene herbivores, such as this young hippo, according to a new analysis appearing in the Proceedings of the National Academy of Sciences. Credit (Painting courtesy of Mauricio Anton) Usage Restrictions MUST CREDIT MAURICIO ANTON 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.