While looking for prospective masters, Charlie imitates several passersby. The second one, a man with sleepy eyes and big lips, is a caricature of Mel Blanc.
First "official" appearance of Charlie Dog, who evolved from [Robert Clampett]'s dog named Rover from Clampett's cartoon titled, "Porky's Pooch", released in 1941, according to Charles "Chuck" Martin Jones in his "Chuck Reducks, drawing from the Fun Side of Life" book from 1996.
Porky's apartment has all the very latest furnishings, including a Murphy bed.
The title is based upon the comic strip Little Orphan Annie created by Harold Gray (1894-1968) and first appeared on August 5, 1924. The character has been on radio, television, stage plays and in the movies.
The black and white cat that delivers Charlie back to Porky's bears more than a passing resemblance to Pepe Le Pew.