Thanks everyone!

Koda doesn't have GSD, it's Australian shepard/lab (supposedly). He's only 43 lbs, so the aussie makes sense, and he does have herding tendencies.

We do know mom was "labish" as she was found with her litter in the last stages of starvation. The rescue actually didn't think Koda would make it as they had a real hard time getting him to eat. As you can see, he has turned into a very healthy boy.