Someone in a Tree2 said: ""Other movies I am considering are Brother Bear Thumbelina Quest for Camelot Moana Cats Don't Dance and Descendants"
I don't know how to break it to you but you might want to stick your Cats musical back in a drawer. Someone got there first."
Cats Don't Dance has barely any similarity at all to Cats - It's an allegory of racism in casting in Golden Age Hollywood for kids, using "humans vs. anthropomorphic animals" instead of the actual races. Only the two main leads are cats - the others are humans or animals of all sorts.
Still, as much as I love the movie, I don't think it would translate very well to stage, but that's just me.