The 1960s were a bad time for cartoons at Warner Brothers. The artistic quality of their classic cartoons has slipped badly. Gone were the old beautifully rendered backgrounds and fluid animation and in their place were cheaper looking cartoons. Sure, the old characters remained but they were clearly being made with a fraction of money and care as they used to be. A terrific example is "Devil's Feud Cake"--a cartoon so cheap, so crappy that it boggles the mind and shows the studio simply didn't care any more.
This cartoon is a mess. Instead of new material, they've taken several older cartoons and cut them to pieces. To link all this material involving Yosimite Sam and Bugs Bunny, a new plot was added involving the Devil and Sam. What's really infuriating are that the change in artwork style and quality is easily apparent to anyone, as the short film bounces from nice older artwork to crappier new artwork. More important is that the cartoon simply isn't funny. A poor excuse for a cartoon and one of the worst Looney Tunes releases you can find--as bad as any of the Speedy Gonzales/Daffy Duck mash-ups--and they are also incredibly bad. Cheap and bad.
