Check out the great Bugs Bunny cartoon “The Rabbit of Seville” (1950), written by Michael Maltese and directed by Chuck Jones.
Here, Bugs is about to give Elmer Fudd “The Works” to the strains of the famous opera. Note he has the standard number of fingers on each hand, characteristic of anthropomorphic animated characters… four.
|Click to Enlarge, Doc!|
Later in the cartoon, however, he now has FIVE fingers! Done, I’d suspect, to allow the animation of each finger to keep time with the music.
…But, blink and you miss it!