Photo: Dire Wolf De-extinction

A biotech company used DNA from thousands of years ago to clone three wolf pups that resemble the extinct dire wolf.

Dire wolves went extinct about 12,000 years ago. In April, biotech company Colossal Biosciences announced it had cloned three pups that resemble the long-dead creatures. Scientists used DNA from a 13,000-year-old tooth and a 72,000-year-old skull to make 15 key edits to the gray wolf genome and recreate dire wolf traits.

Expected to grow to twice the size of gray wolves, the pups have wider heads, larger jaws, and stronger shoulders. The Mandan, Hidatsa, and Arikara Nation has expressed interest in providing them a habitat in which to roam freely once again.