My dog is a Patterdale Terrier bitch, she is 2years old. great working dog & watch dog. great with Me, the Misses and Our Kids, infact good with anyone she Knows.... BUT, if a stranger goes to pat or stroke her, she will back away, sometimes even snap at them and growl... no matter how many times i get people she doesnt know to come up to her to and nice and calm, shes ALWAYS unsure, and it doesnt changer her attitude towards people she doesnt know until shes met them a few times (Even kids) ANY IDEAS?