What is the movie where boy gets turned into a mouse?

The movie that had mice and was make in the 1900s is Cinderella. ---- "The Secret on NIMH" (1982). A field mouse seeks help from a colony of intelligent rats. It starred the voices of Dom DeLuise, Shannen Doherty, Wil Wheaton, John Carradine, Peter Strauss, Derek Jacobi.

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