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

We may have gotten the evolutionary origins of the echidna backward, as new research suggests its ancestors probably lived in ...

They even “adopt” orphans into their colony, proving that even the weirdest mammals can show remarkable kindness. This strange adaptation is a masterstroke of evolution, allowing them to ...

They’re slow, they’re sleepy, and they’ve taken over the internet—but sloths are more than just cute animals hanging from ...

Some species of moth have developed dark and unusual habits in the fight for survival. Discover seven of the most bizarre techniques moths use to survive and thrive in their habitats. The mandolin ...

Echidnas are silent, hot water bottle sized mammals that don’t seem to have gotten the memo about doing all the things mammals are supposed to. They lay eggs like a reptile. They sense ...