On the wall of the woodpecker's home is a framed 4-cent stamp commemorating famed bird artist John James Audubon.
The first appearance of Hector the Bulldog in the cartoon.
One of the few times Sylvester actually is heard meowing like a cat, if only for a moment.
The avian critter resembles the actual North American Red headed woodpecker.
The woodpecker might have been a sidelong glance acknowledgement of Walter Lantz's character Woody, who debuted in 1940.