This pair of pups represent dire wolves brought back from extinction, claims Colossal Biosciences. The Dallas-based company made tweaks to gray wolf DNA based on information gleaned from reconstructed ancient dire wolf DNA to create embryos. Twins Romulus and Remus were born in October. See how they have grown from howling and milk guzzling 15-day-old pups to playful 5-month-olds.
Video Credit: Colossal Biosciences
