Andy Panda - Knock Knock. Andy Panda and his dad are busy in the study reading their respective favorite magazines. They hear a knock-knock, and father opens the door. Nobody's there...
The first cartoon to bear the presence of the woodpecker who would later become the legendary and timeless Woody Woodpecker. In a closing scene censored from many reissue prints, two woodpeckers from the insane asylum (complete with butterfly net) come to take Woody away, but they turn out to be even crazier than he is.
Walter Lantz Productions. Distributed by Universal Pictures, released on November 25, 1940.