Pixie is kinda like that too..she lives with a Staffy that she loves...she gets along fine with the In-Laws Collie and we have another Yorkie and a Yorkie cross living right next door that she is fine with but sometimes when out walking with her she will just take an instant dislike to certain dogs...the last time this happened she just went CRAZY!!!

there was a weimaraner that was off leash running around with a ball and Pixie was just SCREAMING at it!!

I had picked her up because I am nervous of larger dogs around her and my hubby had stopped to speak to someone he knows that has two huge Rottweilers so that was another reason..but Pixie didn't seem at all bothered by them

I think the fact that this Weimaraner was running about excited had something to do with it...maybe she wanted to run around with it..I just don't know...but it really upset her...the noise she was making was just soooo embarassing!!!