I dont think those are Belgian Shepards. They dont look at all like the one I had. It was all black with huge triangular upright ears and long hair coming down off the base of the ear. The Belgian Shepard is a fiercely loyal and powerful dog, with extraordinary hearing and more graceful, I think, than the German Shepard.
A friend of mine was in a pet food supply store and he said he saw a shepherd that was almost twice the size of his golden retriever. You have any idea what kind it could have been?