German Shepherd Training

always biting at his legs and ears, though she very rarely hurts him, and he generally doesn't retaliate
This sounds like my dogs to a tee. Romeo will walk through the kitchen into the living room, hanging off Winston's fur.

a gentler approach, using positive rewards like treats and food as a motivation
I learned that a couple of dogs ago, and have used it a little with these guys.

was capable of dragging me around on his leash
You're telling me! I'm amazed at the pulling power of a GSD puppy.

trust him enough to allow him off the leash
This is the opposite with my dogs, the Anatolian will wander, and while Romeo is fine by himself, he will follow if Winston wanders off.

Neutering will go a very long way
They are both neutered, so I'm glad it's not worse.

Good luck with your
Thanks! I read a little and knew I had taken a bigger challenge than I originally thought. I actually called a friend to try to talk me out of taking the dogs. But my friend who had them talked me into both, I originally wanted Winston, soooo mellow. But I'm glad I took both, they are buddies, and my friend didn't have to split them up, and better yet, they didn't go to a shelter like he was planning.

Romeo has pointed out all the things in my house that need to be thrown out, so that's a good thing.