In which decades did the Japanese Spitz breed take shape in Japan?
Answer
1920s and 1930s
The breed was created through refinement efforts in Japan during the 1920s and 1930s by crossbreeding various imported Spitz-type dogs.

Related Questions
What status did the American Kennel Club (AKC) assign to the Japanese Spitz as of 2019?What characteristic of the Japanese Spitz coat surprisingly reduces general maintenance needs?In which decades did the Japanese Spitz breed take shape in Japan?What critical historical documentation regarding the breed's development was lost?What is a key challenge associated with the breed's required companionship?What is the estimated price range for acquiring a Japanese Spitz puppy from a reputable source in North America?Which imported dogs were likely included in the crossbreeding to create the Japanese Spitz?What contributes to the breed's generally reserved demeanor around new people?When does the Japanese Spitz require the most intensive grooming commitment?How is the breed's moderate exercise need typically satisfied?In which country was the breed first recognized by The Kennel Club after leaving Japan?