Polar bear (IMAGE) Species360 Caption A new study study has found that marine mammal species, like polar bears, live longer in zoological institutions than in the wild as a result of advances in animal care practices centered on animal welfare. Credit Andrew Derocher – University of Alberta Usage Restrictions Please credit photographer License Original 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.