Dire wolves, made famous by HBO's Game of Thrones, have been extinct for around 12,500 years. But thanks to genetic engineers at biotech company Colossal Biosciences, these majestic predators are back. Romulus and Remus are two 6-month-old dire wolves, created by genetically engineering cells from living gray wolves. (Image credit: Colossal Biosciences) Dire wolves wen