The revived dire wolves are growing, as Colossal Biosciences has shared an update on the three pups that were brought back from extinction last year.

Dire wolves who were prominent in HBO's "Game of Thrones" series no longer belong solely to the realm of fantasy. Meet Romulus, Remus and Khaleesi.

A US company claims to have brought an extinct species of wolf back from extinction. The dire wolf last roamed the American midcontinent 12,500 years ago.