Mother and Calf (image) Max Planck Institute for the Science of Human History Share Print E-Mail Caption Many dairy livestock species, including cattle and yaks, were brought to Mongolia in prehistory. Credit Christina Warinner Usage Restrictions This image may only be used in the context of reporting on this publication and with appropriate credit information. 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.