Why are otters playful?

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  • Beckel, Annamarie L. "Wrestling Play in Adult River Otters, Lutra Canadensis." Journal of Mammalolgy. Vol. 72, No. 2. May 1991. (Aug. 29, 2008)http://www.jstor.org/pss/1382111
  • Burghardt, Gordon M. "The Genesis of Animal Play." MIT Press. 2005. (Aug. 29, 2008)http://books.google.com/books?id=6MjCsk_eNJkC
  • Carss, D.N.; Elston, D.A.; and Morley, H.S. "The effects of otter (Lutra lutra) activity on spraint production and composition: implications for models which estimate prey-size distribution." Journal of Zoology. 1998. (Aug. 29, 2008)http://journals.cambridge.org/action/displayAbstract;jsessionid=A51667DF9352D581CEAE4F6C37CF8BFD.tomcat1?fromPage=online&aid=40979
  • "Otters." SeaWorld Education Department. (Aug. 29, 2008)http://www.seaworld.org/animal-info/info-books/otters/pdf/ib-otters.pdf
  • "Sea Otter." Defenders of Wildlife. (Aug. 29, 2008)http://www.defenders.org/wildlife_and_habitat/wildlife/sea_otter.php
  • Stevens, Sadie S. "Sliding Behavior in Nearctic River Otters: Locomotion or Play?" Northeastern Naturalist. 2005. (Aug. 29, 2008)
  • Tennesen, Michael. "Playing for Keeps." National Wildlife Magazine. National Wildlife Federation. June/July 1993. (Aug. 29, 2008)http://www.nwf.org/nationalwildlife/article.cfm?issueID=96&articleID=1278