This is the only Looney Tunes short from the classic era when someone other than Mel Blanc provided Bugs Bunny's voice (Daws Butler did his voice in two scenes, one where he played Groucho Marx, the other where he played Ed Norton from "The Honeymooners"). The reason for this is, Mel Blanc never considered celebrity impressions his strong point, so they were handed to Daws Butler instead. See more
[referring to Elmer
Gee, what a sorehead. I've hoid about professional jealousy among actors, but that dope has got it real bad.
Hey, you come back here!
Oh, no. You huwt my feelings.