Add Yahoo as a preferred source to see more of our stories on Google. Prosecutors alleged genetic material from the Marco Polo argali sheep (pictured) was used to breed the Montana Mountain King A ...

(AP) - A Montana rancher illegally used tissue and testicles from wild sheep killed by hunters in central Asia and the U.S. to breed “giant” hybrid sheep for sale to private hunting preserves in Texas ...

This undated handout photo provided by the Montana Fish Wildlife and Parks, shows a sheep nicknamed Montana Mountain King that was part of unlawful scheme to create large, hybrid species of wild sheep ...

An invasive sheep called the aoudad (Ammotragus lervia) is causing problems across Texas, but the biggest issue has likely ...

Bighorn sheep reintroduced to the Santa Catalina Mountains in 2013 have begun breeding — giving a boost to efforts to rebuild a bighorn herd that disappeared from the range in the 1990s, state ...

OWYHEE COUNTY, Idaho — For Owyhee’s California bighorn sheep population, numbers have dwindled to levels that were nearing the danger zone. Idaho Fish and Game stepped in to help. “Over the years, ...