i own four german shepherds. they are breed of medium to large-sized working dog that originated in Germany
I love german shepherds, have you trained them at all?
I have not professionally trained them, but they are the preferred breed because of their trainability.
I know a few people with german shepherds and they are very loyal family dogs as well. 
Yes, very loyal and popular. They are the 2nd most registered breed buy the American Kennel Club.
Wow, I didn't know that. What's the 1st most registered breed?
Not sure but The AKC official breed standard does not set a standard weight range with german sheperds.
So all different sizes of german shepherds can be registered with the AKC?
Yep! The AKC standard does not have a set weight range
Well that's probably a good thing so more dogs can be registered.