Mucho Mouse was a test cartoon for MGM. The studio wanted to see what would happen if it released an animated short in a foreign country before making it available to North American theatres. Mucho Mouse was the result. It was slated for release in Latin America around Christmas 1956 and then in the U.S. and Canada in late 1957.
Frankly, it’s a bore. And the animation’s odd in that you have classy, attractive versions of Tom and the orange cat (by Ken Muse in some spots) coupled with angular, thick-lined animation that looks like it belongs in a Hanna-Barbera TV cartoon.
Here’s an example when the orange cat thwaps Tom with his guitar strings.
Muse is one of the credited animators, along with Lew Marshall, Bill Schipek, Jack Carr, Ken Southworth and Herman Cohen. Daws Butler’s Tom sounds like Huckleberry Hound trying to read Spanish at one point of the cartoon.