We rescued this GSD today and the woman we got him from said he is purebred as far as she knows. We will obviously love him either way but I'm curious of your opinions. He seems small for a male and currently isn't as muscular as he should be but we will be exercising him more... Not sure if that will change much. His tail also curls up often. Something about the face seems different. Maybe his snout seems shorter because we have a female whose snout is longer. Purebred? Mixed with something?