"Lad: A God" was first published in 1919. It is made up of twelve short-stories, inspired by Terhune's real-life Rough Collie, Lad. Through his dog's fictional adventures, Terhune expresses his opinions on breeding and parenting. The book was a major hit, and has gone through multiple reprints.
The twelves stories making up this novel are: "His Mate", "Quiet", "A Miracle or Two", "His Little Son", "For a Bit of Ribbon", "Lost!", "The Throwback", "The Golden Hat", "Speaking of Utility", "The Killer", "Wolf", and "In the Day of Battle".