He devises a flight by cartoon
And he flies by the light of the moon
It appears he's a bat
But it's queerer than that
His disguise is a mite Loony Tune.
The entire cast of characters is animated during the opening credits (above), but Dracula (played by Béla Lugosi) also becomes a cartoon bat (top) during Abbott and Costello Meet Frankenstein (Charles Barton; 1948). Title by neato David Cairns. I have no idea what it means, but it sure sounds cool.