Goats Performing the 2-Step Challenge (IMAGE) Queen Mary University of London Caption This sequence shows how the goats needed to learn how to retrieve food from a box. They used a linked sequence of steps; first by pulling a lever with their mouths and then by lifting it to release the reward. Credit Queen Mary University of London Usage Restrictions Please credit Queen Mary University of London License Licensed 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.