His Dog by Albert Payson Terhune

Albert Payson Terhune, an acclaimed journalist and collie expert, shot to literary fame as the author of a beloved series of tales featuring his own collie, Lad. In His Dog, Terhune explores the dog-human bond from a different angle: a young farmer finds an injured dog and nurses it back to health, only to discover that the resulting friendship is more than he ever bargained for -- in more ways than one.