Some Cows are more Bullish than Others (VIDEO) University of British Columbia 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 A dairy calf trained to expect a reward in a certain location now finds the potential reward in a location she has been trained to avoid. What will she do? Her decision indicates whether she is an optimist or pessimist. Credit Animal Welfare Program/UBC Faculty of Land and Food Systems Usage Restrictions None 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.