What is the name of the movie about a growing dog? - briefly
The movie you're referring to is "The Shaggy Dog."
What is the name of the movie about a growing dog? - in detail
The movie you are referring to is "101 Dalmatians." This classic Disney animated film, released in 1961 and later remade as a live-action film in 1996, tells the story of Pongo and Perdita, two Dalmatian dogs who become parents to a litter of 15 puppies. The central plot revolves around the efforts of the villainous Cruella de Vil to kidnap the puppies for her own nefarious purposes. As the title suggests, the film features a growing number of Dalmatians as more puppies are born and eventually join forces with their parents to outwit Cruella and secure their freedom. The film is known for its vibrant animation, memorable songs, and enduring appeal across generations.