Doggie March

Doggie March is a 1963 Japanese animated adventure comedy-drama film directed by Akira Daikubara while distributed by Toei Company, Ltd. The film premiered in the same year as another Toei Animation production, Wolf Boy Ken. An apprentice around this time, a pre-fame Hayao Miyazaki worked on in-betweens during the production phase as his first animation gig. The film was released in Japan by Toei on December 21, 1963.

Synopsis from Wikipedia, CC BY-SA 4.0. Everything below written here.

Poster © the film's rights holders.