Colorado Parks and Wildlife released a video and a photo of gray wolf pups exploring outside their den. Three other packs have pups, too.

Wildlife officials are now monitoring four distinct wolf packs in Colorado — all of which have new pups. Why it matters: Pack formation and pups are strong indicators that wolves are successfully being reintroduced in Colorado,

Colorado Parks and Wildlife confirmed and released the names of three new wolf packs in northwest Colorado. At its Thursday commissioner meeting, staff shared the first photo and video of pups