Leonard's Last Attempt (VIDEO) University of Exeter This video is under embargo. Please login to access this video. To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Caption This video shows first and last test to show how the squirrels have improved their problem solving. Credit Pizza Ka Yee Chow and Dr Lisa Leaver Usage Restrictions Use with accreditation. 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.