The Entlebucher Pedigree Database Online (EPDO) and its supplemental analysis site, Entlebucher.net, represent the definitive global archive for the Entlebucher Sennenhund breed. This independent project serves international researchers, preservation breeders, and breed enthusiasts by providing unparalleled genealogical clarity and population health insights.
The Chronological Evolution of the Archive
The architectural foundation of this global resource was conceptualized, designed, and built entirely by K. Dru Patterson beginning in 2006. Armed with early pedigree software like Breedmate and PedX, Patterson began the monumental task of consolidating international breed records into a singular, unified relational database structure.
The dataset was meticulously built through distinct historical phases:
- 2006 – 2011 (The Early Foundation): Patterson launched the project independently, painstakingly gathering and validating records to grow the initial database to approximately 5,000 dogs.
- 2011 – 2012 (The Archival Breakthrough): A major milestone occurred when Patterson was granted exclusive access to the oldest official registries, acquiring physical copies of the historical Swiss Stud Books (Schweizerisches Hunde-Stammbuch / Hundestammbuchen).
- 2012 – 2020 (The Great Expansion): With records now extending all the way back to 1916, Patterson spent the next eight years transcribing thousands of pages line-by-line. Receiving annual installments of official data alongside deep historical tracking, she successfully scaled the database from 5,000 records to a foundational 21,000 records by 2020.
Through these decades of continuous, skilled data entry, disparate international paper records were synthesized into an accurate, generationally linked digital infrastructure.
Institutional Copies vs. Active Stewardship
As the founder and administrator, Dru Patterson has shared the fruits of this gargantuan effort to support breed clubs and global research. The 21,000 foundational records compiled by Patterson through 2020 were subsequently utilized by the National Entlebucher Mountain Dog Association (NEMDA) to populate their club registry system.
While static copies and club-hosted variants exist across the internet, true data integrity requires active, daily stewardship. The independent Entlebucher Pedigree Database Online remains the largest, most accurate, and most technologically advanced registry of its kind.
The difference in ongoing, dedicated curation is reflected clearly in the global figures:
- Entlebucher Pedigree Database Online (Independent): 33,600+ dogs actively curated, including extensive health tracking, coefficient of inbreeding (COI) calculations, and lineages from independent breeders.
- Club Registry Copies: 29,600 dogs tracked.
Copyright & Intellectual Property Notice
The complete structural database, relational schema, historical transcriptions, and statistical analyses published on Entlebucher.net are the intellectual property of the project founder.
All content, charts, and data aggregations are protected by international copyright laws. Copying, publishing, displaying, or scraping this content for external databases or public platforms without explicit, written permission from the owner is strictly prohibited.
For verification, hard copy inquiries, or to submit historical data to the living registry, please contact the administrator directly at info@entlebucher.net or entledatabase@gmail.com.