They also have webbed feet, water-repellent fur to keep them ... and must be successful often to meet their daily intake quota. Each animal may eat six to nine pounds of food per day.

Colossal, the company looking to bring back the woolly mammoth and dodo bird, has created three dire wolf pups. See why they went extinct, pics.

What’s so startling is the size difference: Males are about the size of a walnut—less than an inch long—but some females can reach a whopping six feet long. They can also weigh up to 40,000 ...