Colossal Biosciences said it used ancient DNA from the extinct species to create three dire wolf pups named Romulus, Remus and Khaleesi.

A genetically modified wolf juvenile, one of three successfully bred by reconstructing a genome from the ancient DNA of fossils from dire wolves that had been extinct for over 12,500 years by Colossal Biosciences,

Dallas-based Colossal Biosciences was met with skepticism from the science community after claiming it brought the dire wolf back from extinction on April 7.