SciencePleased pigs - how environment influences animal behaviorTo view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 videoScience08/06/2012August 6, 2012At the Leibniz Institute for Farm Animal Biology, scientists are interested in what pigs are feeling. They want to know how the way they are kept influences their mood. Join Tomorrow Today to find out what makes pigs happy.https://p.dw.com/p/15kR1Advertisement