The World's Tallest Dog is a harlequin Great Dane that measures 42.2 in, more than seven feet tall when he stands on his hind legs. He weighs 170 lbs and is 3.5 years old. "Gibson" lives with his owner Sandy Hall in Grass Valley, California.

Gibson has made several television appearances on show including The Oprah Winfrey Show, The Tonight Show with Jay Leno and, Good Morning America.

Gibson "wrote" his first book with Sandy titled Gibson Speaks which was published March 2008.

Gibson is set to star in an hour long British documentary about the World's Tallest Dog. Fast Facts:

1. Loves being a couch potato
2. Sleeps with Sandy in her bed at night
3. Eats 8-10 cups of dry food and 2-3 pounds of wet food a day