| Clue | Source | Date |
|---|---|---|
| Livestock identifiers | New York Times | 25 Sep 2025 |
| Stock indicators? | ||
| Wildlife-tracking aids | Premier Sunday | 05 Feb 2023 |
| IDs for wildlife | Universal | 11 Jul 2022 |
| Stock identifiers | Wall Street Journal | 21 Nov 2015 |
| Wildlife markers | LA Times Daily | 21 Jun 2015 |
| Stock identifiers | ||
| Wildlife markers | ||
| Wildlife IDs | ||
| I.D.'s for animals |