Looney Tunes - Polar Pals (1939)

Polar Pals is a 1939 Looney Tunes short directed by Bob Clampett.
Caricatures:
Edward G. Robinson - Porky's reflection
Censorship:
Nickelodeon airings of this cartoon deleted two gun shooting scenes due to violence:
The hunter shooting his machine gun at a penguin, leaving bullet holes in the penguin's shadow, which dramatically dies as the penguin himself watches in horror.
A drunken walrus being riddled with gunfire, claiming, "Ya never even touched me," drinking some of his liquor, and having the fluid leak out of the holes in his body.