University of Adelaide researchers discovered monotremes use a completely different sex determination system than other ...

Imagine an animal so baffling that the world’s best scientists once thought it was a hoax. A beast with the bill of a duck, the tail of a beaver, the fur of an otter, and the feet of a frog. Now ...

A new study suggests the platypus and echidna — the only egg-laying mammals — had a water-dwelling ancestor. The finding could upend what’s known of their evolution.

The world’s first platypus conservation center is now open. The initiative will serve as a beacon of hope for the semi-aquatic species whose population has been declining for decades. The Platypus ...

While mammals commonly evolve from land to water, such as whales, dolphins, dugongs, seals, walruses, otters and beavers, it is "extremely rare" for the process to reverse, said the study's lead ...

The platypus (Ornithorhynchus anatinus) has a puzzling array of features.Not only does it have that iconic duck bill, it lays eggs like a bird or reptile but feeds milk to its young like a mammal.

THE MORE WE DISCOVER about the platypus (Ornithorhynchus anatinus) the weirder it seems. A platypus waddling through snow. The latest feature setting this Australian species apart, yet again, from any ...

A new study suggests the platypus and echidna — the only egg-laying mammals — had a water-dwelling ancestor. The finding could upend what’s known of their evolution.