| Clue | Source | Date |
|---|---|---|
| Show dogs' credentials | Newsday | 09 Apr 2025 |
| Kennel club requirements | ||
| Spied Reg in the East looking for records of ancestry (9) | ||
| Purebred dogs' ancestries | Newsday | 03 Oct 2023 |
| Bloodlines | Universal | 20 Nov 2021 |
| Breeders' documents | New York Times | 13 May 2021 |
| Lines eg spider's woven to trap insects at the centre | ||
| Purebred dogs' ancestries | ||
| Descents | ||
| AKC concerns | ||
| Family trees. |