What the film actually depicts:
* The "Substitutiary Locomotion" spell: This spell is used by Miss Price to make objects (like a bed) move and act like living things. It doesn't transform animals into humans or cartoons.
* The "Portmanteau" spell: This spell is used to make objects change into other objects, but it's not used on animals.
The concept of cartoon animals:
* While there are cartoon animals in the film, they're not created through magic or a specific spell. They're simply the animated characters in the movie.
It's possible you're mixing up details from "Bedknobs and Broomsticks" with another story or your own imagination.