The Great Pyrenees is a livestock guardian from the Pyrenees mountains between France and Spain, bred to stay with flocks and drive off wolves, bears and thieves. It's a giant dog, usually 85 to 120 pounds, with a thick white double coat, a plumed tail and double dewclaws on each hind leg. Markings can be gray, tan, reddish-brown or badger.
Many Pyrs are calm, gentle and devoted to their people, but they were bred to make decisions alone. That makes them independent, slow to obey and inclined to bark at night and roam. Expect heavy shedding, a need for secure fencing and training that feels more like negotiation. In Modesto, dry summer heat adds shade and coat planning. Pyrs vary, and Pyr mixes are common in shelters and rescues.