Yaks, (Bos grunniens), a member of the bovine family, are divided into the following categories:
1. Imperial Yaks: black with a black nose.
2. Native Tibetan Yaks: black with a gray nose.
3. Trim Yaks: black with white trim usually on the forehead, feet and tip of tail.
4. Royal Yaks: black and white piebald
5. Golden Yaks: dun coloring over black
6. Woolly Yaks: longer and thicker hair coat









