Pyrenean shepherd or Berger des Pyrénées, breed of medium-sized herding dog that originated in the Pyrenees of S France; its name is often shortened to pyr shep. The breed comes in two varieties, the smooth-faced and the rough-faced. They stand 15–21.5 in. (38–55 cm) at the shoulder and weigh 15–30 lb. (7–14 kg). The most common colors of the pyr shep are fawn, fawn with black overlay, brindle, and grey; they also may be solid black or blue merle. The Pyrenean shepherd historically worked with sheep and other livestock, often along with the larger Great Pyrenees.