My GSD Juno is 9 months old and is a great dog. I know she is very smart and has learned several basic behaviors like sit, down, stay, shake, over, recall (sometimes). One thing I can not get her to consistently do is stop jumping up when greeting me or anyone else. She is SOOOO excited to meet new people and to see my wife/kids and I when we come home that she jumps up repeatedly and just can't seem to calm down enough to not jump. Any suggestions on how to curb this unwanted behavior? We have been trying to not pet her until she sits to reinforce that jumping up is a no no.