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 ...

The echidna is among the first modern mammals to take the "extremely rare" path out of water for life on the land, surprising ...

A is bringing back Mega Evolution, and that means there’s a chance for brand-new Mega Evolutions to be added to the game.