Yes, the Pomeranian breed is closely related to the German
Spitz.
View page
No, German Spitz are slightly smaller and look more like
Pomeranians. Plus, Schipperke are only solid black in colour.
View page
Keeshonds are a spitz type breed which were originally bred as
Dutch barge dogs (hense their barking habits). There are similar,
smaller breeds- Japanese Spitz (white) and German Spitz (variety of
colours as well as multi's).