Bob Clampett's 1941 Porky Pig entry, "We, The Animals-Squeak!" is a parody of a popular radio show of the period, We, The People. Porky (Mel Blanc) introduces us to Kansas City Kitty (Sara Berner), an Irish house cat, who spins a yarn about rescuing her son from gangster mice. Watch for the twist ending.
Edit, 3/17/18: The original YouTube video was deleted. We went to Dailymotion, and opted for a colorized version from 1992.
I must've seen this a dozen times back in the day on cable. Couldn't get enough.