No, German Spitz are slightly smaller and look more like Pomeranians. Plus, Schipperke are only solid black in colour.
German Shepherds measure 55-65cm at the shoulder approximately.
They varied from 2m to 20m
Around 60cm at the shoulder.
A season will last for approx 21 days, between day 8 and 15 being the most fertile time to mate.