Mountain Born — Elizabeth Yates

There were boulders at the top and he picked his way carefully among them. Suddenly he stopped still, gripping a rock and flattening himself against it. Not ten paces from him was a gray wolf, and around her four well-grown cubs were playing--prettily, if anything that spelt such horror could be pretty. His hands felt like ice on the rock. Wolves, weather, a black lamb, a trusty dog--all are part of Peter's life on a mountain farm. His best friend is Benj, a wise old shepherd, and Benj teaches him to care for the sprightly lamb that becomes his own special pet, his cosset. As Biddy grows into her place as leader of the flock, Peter grows too, learning the skills and joys of the shepherd's life.