Tsavo lion teeth (IMAGE) Cell Press Caption The lions’ teeth had been damaged during their lifetimes. Study coauthor Thomas Gnoske found thousands of hairs embedded in the exposed cavities of the broken teeth. Credit Field Museum of Natural History in Chicago Usage Restrictions Credit must be given to the creator. Adaptations must be shared under the same terms. License CC BY-SA 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.