The scene where the puppies suckle from some friendly cows attracted a lot of criticism at the time of release as it was deemed to be inappropriate for a children's film.
The company was in debt following the flop of Sleeping Beauty and desperately needed a hit. There was even talk of closing down the animation division as the company was refocusing on live action films, television and theme parks.
Someone counted all black spots in the movie, frame-by-frame, and reached the total of 6,469,952. This breaks down to 72 spots on Pongo, 68 on Perdita and 32 on each pup.
Clarence NashClarence Nash (best known as the voice of Donald Duck) did the dog barks for this film.
When Walt DisneyWalt Disney read Dodie SmithDodie Smith's story in 1956, he immediately snapped up the film rights. Smith had always secretly hoped that Disney would do just that.
The birth of the puppies actually happened to the author Dodie SmithDodie Smith. Her dalmatians had 15 puppies, one was born lifeless and her husband revived it. However, they sold most of them, and kept only a small number.
The author, Dodie SmithDodie Smith, noted that her favorite cel in the movie, was the one where Pongo stretches while lying on a window sill near the beginning.
Walt DisneyWalt Disney disliked the rough drawing style brought about by the Xerography process.
Due to the commercial failure of Sleeping Beauty, production costs needed to be cut. As a result, this was the first Disney feature film to use photocopying technology (Xerography), which made an animated film with this much visual complexity possible. It also set the visual style of Disney animation (a scratchy, hard outline look) for years until the technology advanced enough (with the production of The Rescuers) to allow a softer look.
To cut costs, the studio was forced to reduce its staff of inkers from 500 to less than 100.
Walt DisneyWalt Disney was said to have been so disappointed in the layout work done by Ken AndersonKen Anderson on the film that he did not forgive him until the end of his life.