Can anyone help with my dogues behaviour? She gets very aggresive, growling, biting, barking jumping and snapping at face! She is only 9 wks old. we have trained her 2 sit , wait, lay down etc. She seems very willing to learn. Nearly house trained also. We done our homework & purchased her from a reputable breeder, met sire & dam etc both of which are show dogs and well behaved. We dont tease or overplay with her but the aggresion seems quite a lot. Any ideas? Thanks.