Federal prosecutors said creating hybrid animals is "unnatural," yet the practice is common in the game industry.

A Montana rancher bred hybrid sheep using endangered species genes for profit. This violated wildlife laws, risking local ...

In his request for the probationary sentence, Schubarth's attorney said cloning the giant Marco Polo sheep hunted in ...

Concerns that Dolly the cloned sheep suffered from early-onset arthritis were unfounded, a study suggests. In fact, wear-and-tear in her joints was similar to that of other sheep of her age ...