Many species of animals have become extinct over the years, but its pretty hard to confirm that an animal no longer exists, just because we can no longer find them. So join us as we count 10 extinct animals that could still be alive.\rbr\rbr\rbr\rbr\rbrWARNING: Spoilers!\rbr\rbr\rbr\rbr\rbr10. Megalodon\rbr9. Passenger Pidgeon\rbr8. Tasmanian Tiger\rbr7. Baiji\rbr6. Japanese Wolf\rbr5. Eastern Cougar\rbr4. Japanese River Otter\rbr3. Mexican Grizzly Bear\rbr2. Javan Tiger\rbr1. Mastodon\rbr-------------------------------------------------------------------------------------------------\rbrChannel: \rbrTwitter: \rbr-------------------------------------------------------------------------------------------------\rbrLegal Notes:\rbr\rbrBackground audio copyright Kevin MacLeod (incompetech.com) \rbrLicensed under Creative Commons: By Attribution 3.