When Bugs Bunny is walking back to his hole in the ground, his mailbox, which was seen earlier next to his rabbit hole, is missing.
When Bugs Bunny has his film projector set up and he turns it on, both reels on his projector are shown to be completely full of film.
There should be one empty reel to store the film as it is being played.
When Bugs runs away after wishing that rabbit season was outlawed and says "I just hope I'll still be in one piece so I can appreciate it", his lips do not move at all.