Jack Hanna has hosted TV shows about wildlife since the premiere of Jack Hanna's Animal Adventures in 1993 and has become a zoological authority in his 30-plus years working at the Columbus Zoo and Aquarium in Ohio. On Jack Hanna's Wild Countdown, he uses his knowledge and experience to present count-down lists of rare, fascinating creatures - appropriate, given Hanna's many appearances on Late Show with David Letterman. Topics include beasts equipped with armor, deceptively cute - but dangerous - animals, and adorable baby critters.
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