I've known a lot of German Shepherds (>10), and while they tend to be incredibly protective of their owners and their home, they don't seem to have the external

I've known a lot of German Shepherds (>10), and while they tend to be incredibly protective of their owners and their home, they don't seem to have the externally-directed aggression that I've seen from pitbulls. YMMV of course. Also, FWIW, the only dogs I have been bitten by were a Chihuahua and a Pomeranian.