Content Warning: This section of the guide contains depictions of mental illness, suicidal ideation, sexual assault, addiction, graphic violence, gore, animal abuse, and dog fighting.

John Sawtelle, the protagonist, is central to the narrative, which often prioritizes his perspective despite the presence of an omniscient narrator. The text defines his character by his passionate nature, deep connection to dogs, and ability to recognize and nurture talent in others. John’s initial struggle revolves around his search for purpose—a quest that drives many of his actions throughout the novel. His primary flaw is his difficulty in seeing the broader significance of his life and work, as he becomes consumed by the pursuit of purpose without fully appreciating the value of his existing experiences.

This struggle is evident in his frequent dissatisfaction and his restless behavior, highlighted by his intense focus on the dogs and the farm. However, John’s journey toward understanding his purpose evolves significantly after Mary’s death. Through his grief and reflection, he comes to realize that the true purpose of his life was embedded in his journey with Mary and the relationships he forged. This realization marks a profound shift in his character, showcasing his growth from a narrow focus on purpose to a deeper appreciation of the life he lived and the legacy he left behind.