The Film
- Dueling Movies: With A Dog's Way Home which has a very similar title and format. They're both based on books by the same author as well.
- The Other Darrin: By the time the film adaptation of A Dog's Journey began production, Peggy Lipton was in the final stages of her colon cancer, so Marg Helgenberger replaced her as Hannah. Lipton eventually died on May 11, 2019, six days before the film's release.
- The Other Marty: Originally, Bradley Cooper was cast to voice Bailey in the first film, but Josh Gad replaced him for the final film.
- Swan Song: This was Peggy Lipton's last film before she died of colon cancer on May 11, 2019.
- Troubled Production: Subverted. Two weeks before the film was released, someone edited a video showcasing the training of a German Shepherd to look like he had been forced into a dangerous water current against his will, thus causing a massive outrage from animal rights activists before the full story was even released. Later, after the movie was released, an investigation proved that the entire story and video
were deliberately faked to start drama. Unfortunately, the damage had already been done to the film's reputation, as animal rights groups everywhere had already called for a boycott of the film and a lot of people bought into the story.
