Ever since "Jurassic Park," people have been talking about bringing extinct animals back from the grave. While it is not possible to revive animals that died out hundreds of millions of years ago, it may be possible to bring an animal out of extinction if it died out a little more recently. This isn't science-fiction, this is actual science fact, and while we probably aren't going to be shelling out top dollar to visit a real-life dinosaur theme park anytime soon, there are some incredible advancements in animal resurrection being done. Here are extinct animals science wants to bring back.