Hubby and I have had three German shepherds, all from breeders. Our first one (all neutered males) was extremely protective of me. Second one was, too and hated every vet we ever took him to! We had to muzzle him every visit. Our last one, and the most expensive, has some kind of auto-immune disease and has lost most of his hair. He has the most pleasant personality of the three and is very mellow and easy-going. Yes, we visited the breeder several times, saw the parents, but you really never know what you are getting. Would I get another shepherd? In a heartbeat, but I have a little black lab that I rescued and she's a doll. She's not protective at all, but would be a great therapy dog.