Why are there sumatran tigers?

Question

If pangaea has been split for over 80 million years ands tigers have only existed for 2 million years then why are there tigers on the indonesian island of Sumatra if most tigers are continental dwellers.
How did they get out there?
Were they introduced or are they native?

Answer 1

During the Ice Ages (Pleistocene) the sea level was low, and there were many land bridges, such as Beringia between Siberia and Alaska, and lots of them in the Indonesia/Philippines area.