I don't think GSD, but how adorable! I want him. DNA tests are not accurate for dogs. Purina is not the best quality food. You can do a search here for something better. Breed isn't important. I fed my GSD and my small mix the same food.
Congrats on your new addition! Stick around and keep posting pictures.
Natty Boh 6-27-12
Annie 1998 - 8-2-12 RIP