 Avery's cartoons at MGM somewhat felt like Looney Tunes and Merrie Melodies cartoons done during that same period at Warner Bros., two cartoon series that Avery himself had worked on back then, albeit the Warners' series gained more popularity than Avery's MGM cartoons.Avery's best known MGM character debuted in "Dumb-Hounded" (1943).Droopy (originally "Happy Hound") was a small, calm, slow-moving and slow-talking dog who always won out in the end, whatever difficulties he was presented with.