Lily chases sheep for the first time in her shepherd-mix life, at Raspberry Ridge Sheep Farm in eastern Pennsylvania. Several times a year the farm invites dogs for "herding instinct tests." But she ...

Wayland Lum, a farmer who says he’s recently had numerous sheep mutilated by trespassing hunters’ dogs, sits behind the wheel of an all-terrain vehicle Wednesday on his farm. “There is no indication ...

The dogs, typically Great Pyrenees, protect sheep against coyotes, mountain lions and bears and have become more common since the 1970s and 80s, when the government banned traps and poisons as ways to ...