I received a 6.5 month old female puppy who is a mix between a German Shepard and a Golden Retriever a few days ago. She not mine I'm fostering her but I noticed that when she sits down if you place your hand by her hip (not pressing just laying there) her hip pops every time she moves or sits down. Sometimes you can even hear it pop. I'm pretty sure they get all of the dogs checked for hip dysplasia but this doesn't seem right but maybe I'm just overreacting. Any ideas?