The Secret of NIMH
Derek Jacobi, Elizabeth Hartman, Arthur Malet, Dom DeLuise, Hermione Baddeley, Shannen Doherty, Wil Wheaton, Jodi Hicks, Ian Fried, John Carradine, Peter Strauss, Paul Shenar
7.5 from IMDB
A widowed field mouse must move her family -- including an ailing son -- to escape a farmer's plow. Aided by a crow and a pack of superintelligent, escaped lab rats, the brave mother struggles to transplant her home to firmer ground.