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Analysis compiles Japanese Spitz registration data from multiple countries, highlighting breed expansion and data integrity.
Harmonized dataset of Japanese Spitz registration statistics from 10 countries (1955–2025), compiled from official kennel club sources. The primary output is a curated year-by-country panel with explicit provenance and transparent handling of definitional differences between sources. A secondary output documents all 57 verified imports of Japanese Spitz from Japan to overseas destinations, providing the first comprehensive founder registry for the breed's international expansion. The dataset supports decade-level summaries, makes gaps and uncertainty visible, and is designed as a reusable baseline for versioned updates. All data have been independently verified through double-entry extraction from primary source documents.
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Yuliya Malinina (2026) studied this question.
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