Why do kangaroos hop?

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  • "Ancient kangaroo didn't hop, say scientists." The Daily Telegraph. Dec. 6, 2007. (July 23, 2008)http://www.news.com.au/dailytelegraph/story/0,22049,22880743-5001028,00.html
  • Dawson, Terence J. "Kangaroos: Biology of the World's Largest Marsupial." Cornell University Press. 1995. (July 23, 2008)http://books.google.com/books?id=KNxIlprcmTYC
  • Domico, Terry. "The Faster a roo Travels, the More Energy It Saves." Smithsonian Magazine. November 1993.
  • Flannery, Tim. "Chasing Kangaroos." Grove Press. 2007. (July 23, 2008)http://books.google.com/books?id=BXhXPXO4Ms0C
  • Myers, Phil. "Family Macropodidae." Animal Diversity Web. 2001. July 23, 2008 http://animaldiversity.ummz.umich.edu/site/accounts/information/Macropodidae.html
  • "Red Kangaroo." National Geographic. (July 23, 2008)http://animals.nationalgeographic.com/animals/mammals/red-kangaroo.html