Often a runner-up in the Guinness Book of World Records, the Irish Wolfhound comes in second in comparison to the Great Dane.

Did you know that the American Molossus Dog is the largest dog in the world? You're about to find out! In this video, we're ...

The pooch named Major, is reportedly awaiting judgement from the Guinness World Records which is due next month as it runs for the spot of the largest dog in the world. Julie and Brian Wiliams with ...