The first Olympic games were held in 776 B.C. in Greece. But it would have been Heracles, the Greek legendary strongman, not Hercules, who was the later Romanized version.
Seven years later, Disney's Lady and the Tramp (1955) would show a similar accidental kiss while sharing food, but with pasta rather than hot dogs.
Made in Pola Color, a postwar three dye process similar to the more familiar Technicolor.
The explosion shown in Popeye's muscle resembles that of the newly developed A Bomb, which was deployed at the end of WW2.
The opening voiceover is by Jackson Beck, using a voice similar to the one his used as the announcer for the "Superman" radio show ("Look, up in the sky!").