So Luna is 15 weeks and has started to get pretty mouthy (her teeth/gums are bleeding so I assume she's losing them and they're sore). But we have started bringing her out into public more and it seems no one teaches their children (or they themselves) to ask to pet a dog. Which brings us back to mouthy, she sometimes nibbles fingers because she is so excited. If people ask and don't rush over to her I can get her to sit and be calm but if they run right over and pet her, I can't calm her. So I was thinking of getting a vest like the service dogs have either saying "I'm training, please don't pet me" or "ask to pet" or something. In this sue happy world I don't want someone to interpret her nibbles as something else. Do you guys think this would be a good idea or would it give people the wrong idea?

I have exactly the same issue wth Rufus who is 4 months old. He jumps and wants to play, and is also obsessed with dangly thing like kids always seems to have, necklaces, toys, hair things etc. You hear all these legal battles going on for dogs around the world I am terrified of him nipping a child. Even though (in my mind) the parents should have taught the child to ask first.

The other day I was down the off leash dog park and someone decided to bring 4 small children in there so I clipped Rufus back onto me. There first question was 'Is he vicious then?' Nope I said, he just doesn't really understand the difference between puppies and small children, so I am holding onto him until you get your children safely out of here. They looked at me like I was the crazy one. The thing is you just know it would have been my fault if anything had happened to the kids.

I also thought about getting a vest, but getting it to read ATTACK DOG IN TRAINING - should keep people away then

Attack dog in training, I like it!!! But you know someone would still try and pet them!

Yes, unfortunately I believe you are right! And even with all the warning it would still be my/Rufus' fault!