During his travels in Asia Marco Polo encountered Tibetan Mastiffs and described them as "tall as a donkey with a voice as powerful as that of a lion."

Here he comes! He's gonna get you! Not that we mind.

Traditionally Tibetan Mastiffs were used to guard property, and often a single dog would guard an entire Himalayan village.

The Tibetan Mastiff is descended from the famous Tibetan dogs that were the ancestors of the majority of Molossuses and Mastiffs throughout the world. The ancient Tibetan Mastiff may have been in existence as early as 1100 BC.

All of us at Cheezburger wish you a very happy Sundog!