A tiny mouse living nearly 7,000 meters (23,000 feet) above sea level in the Andes is helping scientists rethink the limits of life on Earth. The animal, a leaf-eared mouse, is the focus of a new ...

A collection of fossil teeth from southern China is shedding new light on one of the biggest turning points in Earth’s ...

H5N1 has already killed seals and penguins across remote Antarctic islands, and a new study reveals the virus has now crossed ...

Pangolins have armored bodies covered with overlapping scales that protect the mid-sized mammals that are native to parts of ...

A study of fossil teeth from China shows early mammals got bigger before their diets became specialized after the ...

Picture a mouse taking rapid, staccato sniffs of a crumb it's found while foraging for food. Now compare that with a human leaning in for a single, deep inhale to gauge whether a cantaloupe is ripe.

The permanent loss of amputated digits and limbs is the cost of being human. While worms, amphibians, fish and echinoderms ...

Modern mammals are known for their big brains. But new analyses of mammal skulls from creatures that lived shortly after the dinosaur mass extinction show that those brains weren’t always a foregone ...

Researchers analyzed 200 fossil teeth from ancient mammals in China, revealing how they adapted and diversified after the ...

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A study investigated whether the genes for schizophrenia and autism appeared more frequently as mammals evolved bigger brains ...