The devotion of a boy for the animal he has raised; growing understanding and respect between father and son; and a Western setting are the appealing elements in this superior novel of the West. Young Purdy Cobb, alternately adoring and resenting his father, Big Jeas, for his stern authority, learns what self-discipline and sacrifice mean during his trip with Big Jeas and his little sister on a steer run from their Texas home to Wyoming. Purdy clings tenaciously to Sancho, a steer he had raised from a calf, as the only one who understands him. But in the fight to keep Sancho with him, Purdy also finds himself in some of the emergencies his father and the men of the run have to face stampedes, storms, Indian troubles, and although Sancho finally returns to him, Purdy has gained a new independence and maturity. A warm-hearted boy and animal story with a lesson in growing up.