" And, by the time Lady was brought back, cured, the puppy had begun to show the results of his sire's stern teachings. Indeed, Lady's absence was the best thing that could have befallen Wolf. For, otherwise, his training must needs have devolved upon the Mistress and the Master. And no mere humans could have done the job with such grimly gentle thoroughness as did Lad. "

― Albert Payson Terhune , Further Adventures of Lad