Looney Tunes S1935E22 - Billboard Frolics

At night, characters from advertising billboards come to life to sing and dance. There's also a story of a little chick being stalked by a villainous cat. The billboard characters find themselves in the middle of this action. Lots of advertising jokes include parodies of the RCA "Nipper" dog, Wrigley's gum and Arm & Hammer baking soda.