Have you ever seen a German Shepherd? It is a medium to large-sized working dog that came from Germany.
Oh yes and I have a neighbor that owns one. Where is this breed of dog from? 
They were first bred in Germany, dating to 1899. Now they are all over the world. They are often trained to be guards.
I see. No wonder why my neighbor have his own as a guard dog
Since they are highly trainable, they are often used for disability assistance, search-and-rescue, as well as police and military jobs.
I see. Have you ever owned one before?
Kingdom.
Description.
German Shepherds are medium to large-sized dogs. The breed standard height at the withers is for males, and for females. German Shepherds are longer than tall, with an ideal proportion of 10 to 8 1/2. The AKC official breed standard does not set a standard weight range. They have a domed forehead, a long square-cut muzzle with strong jaws and a black nose. The eyes are medium-sized and brown. The ears are large and stand erect, open at
German Shepherd
The German Shepherd (, ) is a breed of medium to big-sized working dog that originated in Germany. In the English language, the breed's officially recognized name is German Shepherd Dog (sometimes abbreviated as "GSD"). The breed was officially known as the Alsatian in Britain from after the First World War until 1977 when its name was changed back to German Shepherd. Despite its primitive, wolf-like appearance the German Shepherd is a relatively modern breed of dog, with their origin dating