Owl Pellets (IMAGE) Oregon State University Caption Small pellets of fossilized owl vomit are a key to studying small mammals in the Great Basin that lived thousands of years ago. Credit (Photo courtesy of Oregon State University) 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.