См.: http://www.theglobeandmail.com/news/world/worldview/enslaved-killer-whales-case-may-mark-new-frontier-in-animal-rights/article2329280/, http://www.cbsnews.com/8301-201_162-57372606/slavery-protections-for-animals-judge-to-decide/, и http://www.cbc.ca/news/technology/story/2012/02/07/killer-whale-lawsuit.html
