The best description of Ruby is she is a warrior. And we seldom see German Shepherd females who are warriors.
We seldom recommend females be used as a client's primary protection dog. Due to their size and make up even excellent females are best supporting larger more powerful males. Then there is Ruby. Ruby is a two year old sable German Shepherd with EXTREME ability in protection. She is intense, tenacious and loves bringing a fight to an opponent. She is one of the few females we are comfortable recommending as a primary or "stand alone" protection dog. As with most of the dogs we select Ruby is great in public, loves children and will be a cherished member of the family.