i have a three year old border collie bitch who is very nervous about going out, she also does not like it when people come into our home the olny exception is my mum and dad who she has known (and lived with) since we got her three years ago. she shows alot of nervous behaviour like licking her lips, panting and pulling on a lead when she is out. she is that bad when she is out that we have been asked if she was a rescue dog and if she has been beaten, neither of these things have ever happened to her. we have two other dogs who are the complete opposite and we have not treated them any differently. i'm just wondering if anybody knows how to help her because she is a very loving dog to people she knows and i dont know how to help her.