My Logan is a GSD mix so I'm praying that she'll be free of all the problems they can encounter. After reading horror stories about bloat, I watch her like a hawk after she eats and I'm so paranoid, I watch for symptoms all the time. She's a slow eater, thankfully. So far, in 2 years, no vet visits except for nail cuts and she's in tip top shape, no hip dysplasia or other problems. I thank God every day. My lab/retreiver Cody had terribly hip dysplasia at an early age, gulped his food, had 2 ACL surgeries. Every dog is different. Logan exhibits a lot of GSD traits though, the major one being as smart as a whip, easy to train, very loyal. I think any dog can have personality problems. I learned my lesson by socializing Logan quickly, as I wasn't sure of her past experiences. She's become friendlier and less nervous in strange situations. It's a daily thing but worth it. Good luck. The main thing is that I'm definitely the boss.