I have 2 white GSD. My first from a breeder is very assertive, independent, protective and smart. He was actually trained to be my diabetic alert dog but he could not succeed if 911 was called and paramedics tried to get to me - he is too protective. So, he still alerts when I'm home or anytime I'm with him but he cannot be a service dog in the full sense. My other white is a rescue and she is quite opposite. As a matter of fact, she was very skiddish when I first adopted her. She wouldn't hurt a flea and is rather shy. She has come a long way but I think it's her natural disposition and she will tend to stay close to me. She is the most loving dog though...can't get enough...is that WGSD or rescue though?
Jiah WGSD - rescued 3/3/2012
Judah WGSD - 8/1/10 S.T.A.R. Puppy, CGC
Bear WGSD mix - 9/8/99 - 8/23/2010
Cuddles GSD mix - 3/6/92 -12/2009
Tiger GSD mix - 3/6/92 - 1997