What are their sexes and ages? That information can be significant.
I see now. The Golden is a male and two the mix is a male on 9-10.
Separate them. All. The. Time.
By allowing the mix to steal the Golden's food, you set this up (though it might have happened anyway due to the herding outside) . As the Golden matures he is going to take less and less crap from the Mix. If a real fight erupts, the WEAKER dog USUALLY starts it. You really do not need the vet bills or the headaches of a real fight.
No more allowing the mix to herd the Golden (separate). Mix and Shepherd out together or Golden and Shepherd out together. Mix and Golden NEVER out together even in the house.
Feed the dogs in crates. Better yet, feed in crates and in separate rooms.
I see now. The Golden is a male and two the mix is a male on 9-10.
Separate them. All. The. Time.
By allowing the mix to steal the Golden's food, you set this up (though it might have happened anyway due to the herding outside) . As the Golden matures he is going to take less and less crap from the Mix. If a real fight erupts, the WEAKER dog USUALLY starts it. You really do not need the vet bills or the headaches of a real fight.
No more allowing the mix to herd the Golden (separate). Mix and Shepherd out together or Golden and Shepherd out together. Mix and Golden NEVER out together even in the house.
Feed the dogs in crates. Better yet, feed in crates and in separate rooms.