Montana rancher Arthur "Jack" Schubarth, 81, succeeded in cloning a wild Marco Polo argali sheep, the world's largest ovine species. That achievement cost him six months in jail. The U.S ...

Marco Polo sheep are the largest in the world ... primarily for private hunting preserves, where people shoot captive trophy ...

Captive hunting facilities ... used artificial breeding procedures to implant the 165 cloned Marco Polo embryos into female sheep on Schubarth Ranch, court records show. Schubarth's process ...