An 80-year-old Montana rancher has pleaded guilty to felony charges stemming from his role in an almost decade-long scheme to create "giant sheep hybrids," the Department of Justice said Tuesday.

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, ...

Schubarth sold semen from MMK along with hybrid sheep to three people in Texas, while a Minnesota resident brought 74 sheep to Schubarth’s ranch for them to be inseminated at various times during the ...