biggest and tallest dog in the world
Worldâs Biggest Dog 2012 - Tallest Dog in the world. Worldâs Biggest Dog 2012 - Tallest Dog in the world. Just a day after the world's smallest dog Beyonce made her television debut, Dave Nasser, the owner of the world's biggest dog named George, released his new book about living with an almost five-feet-tall Great Dane.