When Tom said "Don't You Believe It!" it is a reference to a radio program from the late-thirties and early forties. The program, hosted by Alan Kent and later Tobe Reed, introduced unique facts along with debunking popular myths, followed by its tagline "Don't you believe it!" The program was sponsored by the Lorillard Tobacco Company, promoting "Sensation" cigarettes.
This is the first Tom & Jerry cartoon that the music was not directed by Scott Bradley. Edward H. Plumb was Metro-Goldwyn-Mayer's temporary musical conductor.
Tom Cat speaks in this cartoon, as it concludes, slowly saying "Don't you believe it!"
He said this quote, word for word, first in Mouse Trouble (1944), approximately eight or nine years earlier.
Paul Frees, another noted voice artist, plays the radio announcer.