In an undated photo provided by Guinness World Records 2013 Book, Kevin Doorlag stands with his dog Zeus in Otsego, Mich. The Great Dane is now officially the world's tallest canine according to the record book. The 3-year-old measures 44 inches from foot to shoulder. Standing on his hind legs, Zeus measures 7-foot-4. (AP Photo/Guinness World Records 2013 Book, Kevin Scott Ramos, HO)
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