Rob Wielgus, Washington State University (image) Washington State University Share Print E-Mail Caption Washington State University wildlife biologist Rob Wielgus is studying lethal and non-lethal methods to keep wolves from preying on livestock. Credit Kay Morris. Usage Restrictions None Share Print E-Mail 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.