Yak

The Yak is a herdable animal in Age of Empires III: The Asian Dynasties. They cannot be trained at a Livestock Pen, Farm, Village or Sacred Field, and can only be found roaming wild in the Himalaya and Mongolia map. They hold 100 food when found, and 400 when fully fattened, making them useful livestock, if not as good as the cow and Water Buffalo, then as useful as the llama, and better than the goat and sheep.