CotD: Rudolf Ising was at the end of his career at MGM when he directed “The Boy And The Wolf” as a one-shot cartoon.
The Boy And The Wolf (1943) — MGM Theatrical Cartoon
A little Mexican boy is herding sheep with his dog Perrito. The boy plays a prank on Perrito, pretending the wolf is attacking the flock. Later, when the wolf really comes, Perrito at first doesn’t respond. However loyalty wins out and Perrito saves the day.
Come see “The Boy And The Wolf ” on video at Big Cartoon DataBase

