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The name Alsatian stems from the area of Alsace Lorraine which depending on when you are talking about is a region in either France or Germany, and this is where many of the service dogs were brought back from during the war, but the original German Shepherds were bred in Germany. This name was chosen due to the 'German' connection and they were originally registered as Alsatian Wolf Dogs, but this was then changed to Alsatian (German Shepher Dog) and then in 1977 changed again to German Shepherd Dog (Alsatian). Currently there are moves afoot to change it yet again by dropping the Alsatian part, as they are known as German Shepherd Dogs in their country of origin and all over the world.
There are many different types of GSD, depending on which side of the fence you sit, but in this country there are basically the 'Germanic' types are slightly lighter built than the 'English' types, which are heavier and shorter in the leg. Personally I prefer a more 'middle of the road' type and one of the greatest dogs of this type for years has recentrly passed away, Ch Norwulf Going for Gold at Slatehouse. I will see if I can put a link to a picture of him.