The platypus and echidna, often regarded as some of the most peculiar animals on Earth, may be hiding a far more complex ...

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

the appropriately named torrent duck is a striking example of evolution's adaptive power. Torrent ducks have evolved toward higher concentrations of myoglobin, a protein which helps to hold oxygen ...

The new research could upend what’s known of the evolution of the most primitive ... The amphibious platypus has a bill and webbed feet, like a duck, and a beaver-esque tail.