Gray wolf illustration (IMAGE) University of California - Davis Caption This illustration indicates the ranges of Holarctic, Tibetan and Indian wolf populations across the Northern Hemisphere. Credit lllustration by Lauren Hennelly, UC Davis Usage Restrictions Credit must be given to the creator. Only noncommercial uses of the work are permitted. No derivatives or adaptations of the work are permitted. License CC BY-NC-ND 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.