Mouse Hunt -

(1997) is a dark comedy slapstick film that follows two brothers, Ernie and Lars Smuntz, as they battle an incredibly intelligent mouse for possession of a valuable Victorian mansion they inherited. Core Premise & Plot Mousehunt (film) - Tropedia

The result would be this film. Nathan Lane and Lee Evans are Ernie and Lars Smuntz, brothers with a recently deceased rich father. Mouse Hunt (1997) - Cinema Cats Mouse Hunt