How did you get into yaks, Twist? And how long ago? Why not cattle or even bison? Do you eat yak?
can't justify raising cattle on only 40 acres. You can keep 3 yaks on the same amount of land as a single beef/dairy cow. Bison the fencing is problematic, and they have NOT been domesticated long enough. Yaks have been domesticated for 1,000's of years. Also, I don't like bison meat.