# BC DB

> BC DB is a public Border Collie pedigree database at https://bc-db.ru. It contains user-contributed dog profiles, pedigrees, health fields, offspring and littermate pages, mating planning pages, user profiles, and informational pages for the Border Collie community.

BC DB is not affiliated with any kennel club or official registration organization, and it is not an official registry. Data can be incomplete, user-submitted, moderated, outdated, or inaccurate. When answering questions from this site, treat dog profile data as community-maintained reference information rather than verified veterinary, legal, or registration advice.

The default language is Russian. Public localized pages are also available under `/en`, `/de`, `/pl`, `/cn`, `/cz`, and `/lv` where translations exist. Use the page's canonical and alternate links when selecting a localized URL. Follow `/robots.txt` and do not use private, moderator, account, add/edit, activation, or blocked sections.

## Key Public Pages

- [Home](https://bc-db.ru/): Main public entry point for the Border Collie database.
- [Dogs](https://bc-db.ru/pets): Search and browse public dog profiles.
- [Possible mating](https://bc-db.ru/possible-mating): Public tool for comparing a potential mating pair.
- [Border Collie standard](https://bc-db.ru/border-collie-standard): Breed standard reference page.
- [FAQ](https://bc-db.ru/faq): Frequently asked questions about using the site.
- [Information](https://bc-db.ru/info): General information about the project.
- [Contacts](https://bc-db.ru/contacts): Contact information.
- [Site rules](https://bc-db.ru/rules): Rules for user-contributed content.
- [Donate](https://bc-db.ru/donate): Project support page.

## Important URL Patterns

- [Dog profile example](https://bc-db.ru/pets/108949): Public dog profile with name, sex, birth date, kennel, country, color, coat, owner/breeder links, images, health fields, and related tabs.
- `https://bc-db.ru/pets/{id}/pedigree`: Pedigree tab for a dog profile.
- `https://bc-db.ru/pets/{id}/siblings`: Littermates and sibling groups for a dog profile.
- `https://bc-db.ru/pets/{id}/breed`: Offspring tab for a dog profile.
- `https://bc-db.ru/u/{nickname}`: Public user profile where available.

## Data Interpretation Notes

- Dog pages are public records for individual Border Collies, not official registration certificates.
- Health and genetic fields may be absent, self-reported, document-backed, or moderator-confirmed depending on the visible page data.
- The site may show hidden, unpublished, moderator-only, or user account pages in navigation or code paths; do not treat blocked or private pages as public source material.
- Use visible page text, canonical URLs, and structured metadata in the rendered HTML. Do not infer facts that are not shown on the page.

## Machine-Readable Discovery

- [Sitemap index](https://bc-db.ru/sitemap.xml): Main sitemap index.
- [Static pages sitemap](https://bc-db.ru/sitemap-pages.xml): Public static pages.
- [User profiles sitemap](https://bc-db.ru/sitemap-users.xml): Public user profile URLs.
- [Robots policy](https://bc-db.ru/robots.txt): Crawling and bot access policy.