Why do spotted hyenas laugh?


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  • Burton, Maurice and Burton, Robert. "International Wildlife Encyclopedia." Marshall Cavendish. 2002. (Feb. 25, 2009)http://books.google.com/books?id=g2_St32S_5wC
  • Carey, Bjorn. "The Painful Realities of Hyena Sex." LiveScience. April 26, 2006. (Feb. 25, 2009)http://www.livescience.com/animals/060426_hyena_cubs.html
  • ­Joyce, Christopher. "Laughing's No Joke For Spotted Hyenas." National Public Radio. Feb. 13, 2009. (Feb. 25, 2009)http://www.npr.org/templates/story/story.php?storyId=100628612
  • Kemper, Steve. "Who's Laughing Now?" Smithsonian. May 2008. (Feb. 25, 2009)http://www.smithsonianmag.com/science-nature/hyena.html
  • Michigan State University. "Spotted Hyenas Can Increase Survival Rates By Hunting Alone." ScienceDaily. July 21, 2008. (Feb. 25, 2009)http://www.sciencedaily.com/releases/2008/07/080716171128.htm
  • Stevens, Jane Ellen. "Hyenas' fatal fighting is nothing to laugh about." BioScience. Vol. 43. No. 4. 1993.
  • Viegas, Jennifer. "Hyenas Baby Talk With Groans." Discovery News. July 7, 2008. (Feb. 25, 2009)http://dsc.discovery.com/news/2008/07/07/hyena-groans.html
  • ­Zimmer, Carl. "Sociable, and Smart." The New York Times. March 4, 2008. (Feb. 25, 2009)http://www.nytimes.com/2008/03/04/science/04hyen.html

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