-Much of Disney studio experiments were designed to prepare the studio animators for feature productions.
-Note how the animators create unique personalities for the different animals in Dumbo, especially the various elephants.
-Note the "Pink Elephants" sequence in Dumbo and what a stylistic departure it is from the rest of the film. (Think Incoherent cinema)
A Trip Through Walt Disney Studio (1938)
from Disneyland Television: The Tricks of Our Trade (1957)