What distinction separates the Japanese Spitz from ancient native Japanese dog breeds like the Shiba Inu?

Answer

It is Japanese-developed, not one of the original ancient native breeds

The Japanese Spitz is not one of the original, ancient native Japanese dog breeds (*Nihon Ken*); rather, it is a Japanese-developed breed utilizing imported European stock.

What distinction separates the Japanese Spitz from ancient native Japanese dog breeds like the Shiba Inu?
Caninedog breedancestorspitzJapanese Spitz