Go wild at the zoo
DENVER – A hyena sleeps soundly against the glass wall of its enclosure at the Denver Zoo July 21, 2012. The hyena lives in a part of the zoo known as Predator Ridge; a $16.5 million exhibit designed to recreate a portion of Samburu National Reserve in Kenya, according to the official website. (U.S. Air Force photo by Staff Sgt. Nicholas Rau)

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Photo by: Staff Sgt. Nicholas Rau |  VIRIN: 120725-F-EB935-005.JPG