Giant George is a blue Great Dane, a breed of dog that is known for its height. Of all the Great Danes living today, George, owned by David Nasser, is the biggest dog in the world. This dog weighs around 110 kgs and is 110 cms tall. George was born on the 17th of November, 2005, and was adopted by David when he was 7 weeks old. He was announced as the biggest dog in 2010 when he appeared on The Oprah Winfrey Show. George currently lives in Tucson with David Nasser’s family.