My german shepherd female is just mean. She's wonderful to us, very, very protective, but not good with any other animal or people that she decides she doesn't like (usually men only she doesn't like). She wasn't always this way. She turned mean after she viewed our house being burgularized and couldn't get out of her pen to stop it. Some people have suggested that I breed her to settle her down. I am seriously considering spaying her. Originally I wanted to breed her, as her conformation is great, but I don't want to pass along undesirable traits to her offspring. Would you breed this dog or would you spay?