What does Enzo believe happens after a dog passes away?

Enzo, the narrator and protagonist of "The Art of Racing in the Rain," holds a unique belief about what happens after a dog passes away. He feels that dogs who are ready can take on human form. This belief is rooted in Enzo's longing to fulfill his desire to communicate and live as a human, reflecting a deeper philosophical idea about the soul and aspirations beyond death. Enzo’s perspective illustrates the bond between humans and dogs, emphasizing loyalty and the hope for transformation as a form of enhancement of oneself in the next life.

This idea correlates with themes of love, loyalty, and the unspoken communication between Enzo and his owner, Denny. It emphasizes Enzo's dedication to Denny and his desire to protect and guide him, suggesting that even after life, a dog's essence remains connected to their human counterparts in a different form.