Panthera tigris trinilensis is a big animal called a tiger. It lived a very, very long time ago before people even existed! Scientists found some bones and teeth from this tiger and they think it looked a bit different from the tigers we see today.
This tiger had big, sharp teeth and strong muscles that helped it hunt for food. It could run fast and jump high! Even though it lived a long time ago, scientists still study it to learn more about how animals have changed over time.