A beloved family dog who contracts rabies and becomes a deadly threat. Cujo's illness and transformation play a pivotal role in the novel's events.

An optimistic man who runs an advertising business called Ad Worx and faces significant personal and professional challenges throughout the story. He is Donna’s husband and Tad’s father.

The four-year-old son of Donna and Vic, who has a close bond with his father and harbors fears of monsters. Tad's belief in his father's comforting words features in his storyline.

Joe Camber’s wife and Brett’s mother, she seeks a better future for herself and her son amid difficult family dynamics. She shares ownership of Cujo.

Charity’s husband and Brett’s father, Joe is a mechanic who loves his dog Cujo. He operates a car service yard which becomes central to the novel’s setting.

The 10-year-old son of Joe and Charity, Brett loves Cujo and must navigate his parents’ contrasting influences. His decision regarding Cujo’s illness has a significant impact on the story.