| Clue | Source | Date |
|---|---|---|
| Zoo patron removed one of the lowest of animals (9) | ||
| Microbe like an amoeba | Universal | 11 Sep 2024 |
| Small animal mauled zoo patron (9) | ||
| Single-celled organism | New York Times | 20 Jun 2019 |
| Single-celled organism | ||
| Amoeba, for one | ||
| Minute life form. |