A Montana man faces sentencing in federal court for illegally using tissue from large sheep hunted in Central Asia and the U.S. to illegally create hybrid sheep for trophy hunting.

The rancher illegally brought parts of the Marco Polo argali sheep, one of the largest sheep species in the world, weighing 300 pounds or more, to the U.S., court records show.

Schubarth's process would result in a single pure genetic male Marco Polo argali named "Montana Mountain King" or "MMK," the Justice Department said. The rancher then used MMK's semen to artificially ...

A Montana man has been sentenced after conspiring to create massive hybrid sheep then sell the animals to Texas game hunting ranches.

Marco Polo sheep are the largest in the world, can weigh 300 pounds (136 kilograms) and have curled horns up to 5 feet (1.5 meters) long, court records said.

A Montana has been sentenced to six months in federal prison for using tissue and testicles from sheep hunted in Central Asia and the U.S. to create hybrid sheep illegally.