This cartoon is considered a remake of Of Fox and Hounds (1940); in fact, the opening sequence was "borrowed" directly from the original.
Both Bugs and Willoughby break the fourth wall, each in his own unique style.
One of only a few Bugs Bunny cartoons with a title that does not refer to him being a rabbit, just like Knights Must Fall (1949).
The early scene of the huntsman blowing the horn looks as though it was rotoscoped.