when the girl bunny (the oldest one, not the little one) laughs at her brother for kissing Maid Marion, she kind of grabs her stomach and doubles over laughing. later on in the movie, they show the exact same clip...when they're celebrating at the end and everyone is dancing they show the same clip of her doubling over and holding her stomach.
This may seem like a slip-up, but I don't think it actually is. You may not know this, but in most cartoons animators may use the same scene over once or twice if they can fit it in the story. This saves time for the animators. This is why in many cartoons you will see the same background repeating itself as characters are walking. I hope I cleared this up for you.