Heart of a Dog is a fascinating and moving book by Albert Payson Terhune. In this work, readers will learn about the devotion, loyalty and boundless love of a dog's soul. The hero of the book, a dog named Lad, vaguely resembles his master in his understanding of the world and devotion. The author masterfully reveals the relationship between man and animal, emphasizing the importance of understanding and trust. "Heart of a Dog" is a book that deeply feels, leaving a trace in the heart of the reader that will remind of the value of friendship and love.