Pluto is the title character in the 1942 Disney short Pluto Junior.
The cartoon centers on Pluto dealing with a young puppy who resembles him and creates trouble around the household. The story uses Pluto’s familiar role as a dog whose instincts and curiosity repeatedly lead to comic complications.
Pluto Junior belongs to a group of Disney shorts that gave Pluto stories independent of Mickey Mouse. These films helped establish Pluto as a character capable of carrying a cartoon without requiring Mickey to appear. His expressive animation made it possible to communicate emotion and conflict largely through body language and animal sounds.
The title can cause confusion because “Junior” refers to the puppy in the story, not to a separate famous Disney character who replaced Pluto. Pluto himself remains the central figure, and the short is part of his solo theatrical cartoon series.