Heathcliff and the Catillac Cats

The Home Wrecker [Heathcliff] (1x127)

Air date: Dec 13, 1984

A mouse named Newton, who has super-human strength, ventures into Heathcliff's home and starts reeking havoc. Grandpa orders a robot to get rid of the mouse. The robot mistakes Heath for a mouse and starts chasing after him. Newton the mouse saves Heathcliff.