Polar Bear Eating Caribou (image) American Museum of Natural History Caption A polar bear, Ursus maritmus, eats a caribou. Credit ©American Museum of Natural History/R. Rockwell Usage Restrictions Can be used with appropriate credit 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.