In Yellowstone, Wolves Wait as Brown Bears Eat Their Spoils (image) Utah State University Share Print E-Mail Caption In North America's Yellowstone National Park, hungry wolves wait to access their elk kill as brown bears feast on the spoils. Utah State University ecologist Aimee Tallian and colleagues report wolf kill rates fall in the presence of brown bears on two continents. Credit Daniel Stahler, National Park Service Usage Restrictions Please credit Daniel Stahler, National Park Service 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.