New research suggests that land-based echidnas descended from semi-aquatic mammals. Gunjan Pandey CC BY-SA 4.0 via Wikimedia Commons Between backward-facing-feet, nipple-less milk secretion and ...

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

Analysis of single bone may tell us if the platypus is an evolutionary anomaly — starting on land, then returning to water.

A platypus’s genome is a strange blend—part mammal, part bird, part reptile. Scientists call it a “genetic Frankenstein” because of how many evolutionary features it shares across classes.

The Mammals Dark team travelled to Argentina to film one of the least mammal-like mammals in the world – the ‘large hairy armadillo’. Image by Tom Parry. Camera operator Max Smith sets up a ...

Although they came into their own only after the extinction of the dinosaurs some 65 million years ago, mammals had maintained a low-profile existence for some 150 million years before that.

Japan's Ryukyu Islands, which includes Okinawa, are the exclusive home to two rare mammals, the Amami rabbit and Ryukyu long-furred rat. These animals are hard to observe, but conservationists ...