Conservationists recently introduced 15 of the polka-dotted marsupials into a protected area of New South Wales ...

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 ...

Analysis of the fossil suggests that the only two egg-laying mammals, platypuses and land-based echidnas, both descended from ...

These 1,000-pound creatures travel in large herds and can smell water miles away. Now, the race is on to stop them from ...

Why do kangaroos have such muscly biceps, and why do they love to show off their muscles to the females? Read on to find out.

Found in Australia and New Guinea ... it is believed that dolphins and whales evolved from land animals and share lineage with hippos. But there are few examples that show evolution from water ...

The new Bribie Island breakthrough is now large enough for boats to travel through, while there are fears that animals ...