When it comes to protecting and preserving endangered species, human beings have a sad track record. We can see it in our hearts to forgive our distant ancestors—who were too busy trying to stay alive to worry about the population dynamics of the Saber-Tooth Tiger—but modern civilization, especially over the last 200 years or so, has no excuse for overhunting, environmental depredation, and just plain cluelessness.
Below is a list of 100 animals that have gone extinct, including mammals, birds, reptiles, amphibians, fish, and invertebrates.
