like meeting a unicorn. That such creatures might share our beds or lie on the sofa with us while we watch TV seems like proof that heaven is capable of dipping down and grazing the earth with the tip of its toe.The Great Pyrenees is an exceptionally old breed, developed hundreds of years ago in the Pyrenees mountains between France and Spain. Developed by shepherds to live among and defend the flock from large, vicious predators, they had to be powerful-but...