The Great Pyrenees began as a livestock guardian in the mountains between France and Spain, where big white dogs stayed with flocks and faced down wolves and bears. That history explains much of what adopters see today: a giant dog, usually 85 to 120 pounds, with a thick white double coat, a calm manner and a habit of deciding things for itself.
In Orland Park, that independence shows up as patrolling the yard, barking after dark and ignoring a recall command it considers optional. Heavy shedding comes with the breed, so expect brushing at least weekly and extra work when the coat blows. Pyrs and Pyr mixes are often seen in rescues nationwide, and each dog's personality differs, so judge the dog in front of you rather than the breed label.