In the trivia...
Writers Will Finn and John Sanford originally pitched the film as an animated feature film based on the myth of the Pied Piper. Maggie the Cow was originally written as a deaf girl. Michael Eisner immediately hated the idea, because he thought no parent would take their children to see a movie where children are murdered. So Will and John wrote this movie, which contains elements from the Pied Piper myth.
hmm... "no parent would take their children to see a movie where children are murdered"
I definitely agree, but for whatever reason, that awful Prince of Egypt was a success.