A biology research company based in North Texas says it's brought a legendary creature back from extinction after more than 12,000 years. Dallas-based Colossal Biosciences, which describes itself as the "world's only de-extinction company," has announced the rebirth of the once-extinct dire wolf. Dire wolves, made famous by "Game of Thrones," were an American canid that were as much as 25% larger than gray wolves. They had previously been extinct for over 12,500 years. But now, Colossal says three dire wolf pups are thriving. "I could not be more proud of the team. This massive milestone is the first of many coming examples demonstrating that our end-to-end de-extinction technology stack works," Colossal CEO Ben Lamm said. “Our team took DNA from a 13,000 year old tooth and a 72,000 year old skull and made healthy dire wolf puppies. It was once said, ‘any sufficiently advanced technology is indistinguishable from magic.’ Today, our team gets to unveil some of the magic they are working on and its broader impact on conservation." The three litters of Colossal’s dire wolves include two adolescent males named Romulus and Remus, after the twins raised by wolves in Roman mythology, and one female puppy named Khaleesi, after the "Game of Thrones" character Daenerys Targaryen. How did Colossal Biosciences bring back the dire wolf? Colossal said it extracted DNA from two dire wolf fossils: a tooth from Sheridan Pit, Ohio, that is around 13,000 years old and an inner ear bone from American Falls, Idaho, that is around 72,000 years old.