It looks like a squat, cuddly little bear, chirps like a bird and has webbed feet for swimming – meet the very rare and bizarre wild dog that's like no other ...

Bone claws, oxygen-absorbing “hair,” and hands-on frog dads. Meet the hairy frog (or wolverine frog), one of nature’s strangest amphibians.

But despite its variety of habitats, San Marino is one of the least biodiverse countries. This is largely because of its small size, its landlocked borders (marine and intertidal habitats tend to ...

Evolution is perhaps the most extraordinary story ever told—a tale spanning billions of years that connects every living thing on Earth through an intricate ...

Dramatic landscapes and rich biodiversity characterize Alaska’s unique environment. Alaska is the only US state with ...

Also known as the polar wolf or white wolf, the Arctic wolf (Canis lupus arctos) is a subspecies of the gray wolf that ...

Why do female reindeer have antlers? It’s a question that has long perplexed scientists, since reindeer (Rangifer tarandus)—also known as caribou—are the only species of deer whose cows sport the bony ...

Female caribou runs near Teshekpuk Lake, Alaska. Image credits: BLM Alaska. Every year, hundreds of thousands of caribou from the Porcupine Herd go through one of the longest terrestrial migrations.

Caribou mothers gnaw on their own antlers for nutrition after their long migration in the cold and dry climate of the Arctic tundra, a new study reveals. Caribous, also called reindeer, are the only ...

Biologists have long wondered why caribou are the only deer in the world in which females, like males, have antlers. A new study of shed antlers collected from calving grounds in the Arctic National ...