When many prey species became extinct—probably in part because of human hunters—the dire wolf may have been doomed, and the gray wolf swept down from northern Canada and Alaska to fill the ...

The list of 10 most endangered rivers of 2025, according to the nonprofit American Rivers, includes the Mississippi River and ...

Dire wolves went extinct roughly 13,000 years ago ... Here's a look at what we know about the prehistoric species: Along with saber-toothed cats and enormous short-faced bears, dire wolves ...

Field biologists rappelled down a Lake Pleasant cliffside to check on bald eagle nestlings, ensuring the national bird continues to soar in Arizona.

Maui whale rescue responder Ed Lyman and his partner, David Mattila, are well aware of the difficulties and dangers ...

bald eagles were designated as threatened and endangered throughout the lower 48 states under the Endangered Species Act, but not in Alaska, where the population remained strong. Through robust ...