Musk oxen in Greenland (IMAGE) Aarhus University Caption Musk oxen grazing in the Zackerberg Valley in Greenland. The picture shows some of the animals, that were used in this study. Here its a calf and an adult oxen grazing the tundra. Credit Lars Holst Hansen Usage Restrictions May only be used to communicate this story. 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.