Evolution of Diggers (IMAGE) University of Oregon Caption University of Oregon researcher Samantha Hopkins, shown with stuffed animals in her office, studies the evolution of mammals who burrow. Credit Photo by Jim Barlow 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.