A new study suggests the platypus and echidna — the only egg-laying mammals — had a water-dwelling ancestor. The finding ...

After the demise of the dinosaurs following an asteroid strike 66 million years ago, mammals became Earth's dominant land ...

The ferret badger spotted in India part was seen exhibiting foraging behavior, suggesting they may be more omnivorous than ...

Imagine a creature that looks like a mashup from a child’s wildest dreams: a furry animal with the bill of a duck, the tail ...

Australia's burrowing echidna evolved from a water-dwelling ancestor in an "extremely rare" biological event, scientists said ...

Early humans' mastery of fire may have triggered genetic changes that help heal minor burns but complicate recovery from ...

A controversial idea suggests the ancestors of echidnas were more like the platypus. For the first time, fossil evidence ...

An analysis of the interior of a single bone suggests its owner was probably an aquatic or semi-aquatic animal. Since the ...

Yes, rodents are classified as mammals. Rodents are warm-blooded, milk-producing creatures. There are a number of characteristics defining rodents as mammals. Some of these traits are also unique to ...

About 50 million years ago, a small bird waded along a lakeshore in what today is central Oregon. A worm wriggled at its feet. The bird appeared to probe the silty earth with its beak, once, twice, ...

An "unprecedented" toxic algae bloom has overrun the coast of Southern California, sickening marine animals and staining the ...