What breed is my GSD mixed with?

I think you could be right with blue heeler. Especially with his leg markings and also in his face, he has a shorter muzzle. He's got adorable ears:) I don't see too much Aus. Shepherd in him either tbh and im glad you know that GS is in him for definate because i wouldn't of guessed that. Definate blue heeler. He is very cute.