In 1919, Albert Payson Terhune published a novel called "Lad," loosely based on the life of his real-life rough collie, Lad. Born in 1902, the real-life Lad was an unregistered collie of unknown lineage. Through Lad"s adventures, Terhune expresses his views on parenting, obtaining perfect obedience without force, and the nature and rights of the "well-bred". It has sold more than one million copies and is Terhune"s best-selling work (and the one that propelled him to fame). "Further Adventures of Lad" continues the collie"s story, with more heartwarming adventures.