Johnny Lanark formed an immediate attachment to Rex, the wild son of a runaway, thoroughbred Border Collie, when he saw him at Ned Foley's cottage - and Rex returned his affection. In fact, his devotion to Johnny battled with his urge to guard and drive the flocks. Johnny's father, Pete, had a problem, too, for he had sworn to train the dog and his dogs were always winners at the Sheepdog Trials ...

I've always enjoyed Joyce Stranger's animal stories, and this is no exception.