This Tiger Was Thought Extinct. Then a Single Strand of Hair Was Found.

<img width="128" height="52" src="https://www.sciencealert.com/images/2024/04/JavaTiger.jpg" alt=""/>
It could still be out there.

https://www.sciencealert.com/this-tiger-was-thought-extinct-then-a-single-strand-of-hair-was-found