Lulu has developed the habit recently of jumping up and nipping at us when she gets really excited either when we let her out of her crate or just when generally excited while playing. It started out with just our hands, but lately she has been nipping whatever she can get her little mouth on. She doesn't nip too hard, usually, but sometimes it does hurt a little.
Regardless, I would like this behavior to stop, but I'm not sure how to nip it in the bud (*groan* bad pun, but I couldn't resist). We say "no" and tell her to sit and then praise her when she does. That's all I've got for ideas...can anyone offer any tips?