Wolf (IMAGE) University of Washington Caption A gray wolf in Denali National Park and Preserve, Alaska, shown on a wildlife camera. Wolves and cougars are the top predators in most western landscapes. Credit Kaija Klauder/University of Washington Usage Restrictions credit required 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.