The worm in appearance, voice and behavior is a caricature of Red Skelton's Junior, the Mean Widdle Kid character.
An early incarnation of Foghorn Leghorn is the lead, though his voice sounds more like a combo of barnyard dog and Henry the chicken hawk. An early Pepe Le pew esque character also appears. And the worm is a Tweety sound alike. Mel Blanc truly was a master of his trade.