I have noticed now that Bella, 6 months old, has barked and shyed away from my dad and from my father in law. I tried to figure out the problem becuase shes not like that with all men. I finally realized that both of them come into my home like a whirlwind. They are not mean or anything but just loud and can be boisterous. So this weekend the in-laws came to town and my father in law is all shook up because "he's never been rejected by a dog". I tried to explain that if he would be calm and give her time she would maybe approach him and that if she didnt I didnt want him to try to force her. It took he about an hour and a half to get used to my dad last month and then they were best buds. I know that part of the GSD nature is to be reserved and aloof. Do you think she is doing just that or maybe it could be more? She will get her hackles up, bark and stay clear of them. My neighbor is a big guy and can be loud but when he comes over she just sits by him and begs for belly rubs.