Platypuses are weird looking. They look like someone stitched together a duck and a beaver—flat bill, webbed feet, and a ...

According to most experts, the first mammal was Morganucodon, a small, shrew-like rodent that appeared during the Jurassic Period, approximately 200 million years ago. It weighed a few ounces and ...

Human beings have been at the center of ecological change on Earth for thousands of years. But as history shows, no species ...

A bizarre-looking sea turtle left beachgoers doing a double take after it washed ashore in Texas looking like it had a coat ...

Add Yahoo as a preferred source to see more of our stories on Google. Scientists have confirmed the rediscovery of Attenborough's long-beaked echidna, a species previously thought to be extinct for ...

Scientists may have been dramatically undercounting the number of vertebrate species on Earth. A large analysis of more than 300 studies suggests that for every recognized species of fish, bird, ...

Securing the survival of the Saola requires overcoming a 13-year absence of confirmed visual evidence, with the last widely accepted camera trap photo taken in 2013. Existing survey coverage accounts ...

Mammals are not especially diverse. Roughly 6,800 mammal species are known to exist, compared with about 8,800 species of amphibian, 11,000 species of bird and 12,500 of reptile. Yet when most people ...

A plantation worker photographed this new genus of mammal in New Guinea, thought to have been dead for 6,000 years.

How scientists (and the rest of us) are finding 16,000 new species a month.