Once-Endangered Species Eventually Become Extinct. You’ll Be Surprised How They Get There.

53. Falkland Island Wolf

The Falkland Island wolf – aka, the Antarctic wolf – held the distinction as the only native land mammal on the islands. Now, however, there are none.

In 1876, the wolf became extinct. Research comes up short in the search for why, but some theories suggest that settlers on the islands mass poisoned and otherwise killed the predators to save their sheep.