What is the author's style in Modoc: The True Story of the Greatest Elephant That Ever Lived by Ralph Helfer?

The novel is written from the perspective of Ralph Helfer, a well known animal trainer. Helfer's belief is that animals should be trained with love and kindness, rather than fear and pain. As such, Helfer relates well to the story of Bram and Modoc, as the novel tells the story of the boy and his elephant, growing up together, sharing many adventures and hardships, but at last reuniting happily.