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.

Earth’s vertebrate diversity may be far richer than anyone realized. A sweeping analysis of more than 300 studies suggests that for every known fish, bird, reptile, amphibian, or mammal species, there ...

A monkey descending a tree trunk often keeps its head up, moving almost like a cautious climber backing down a ladder. Squirrels and many other mammals, by contrast, tend to go headfirst.

Many mammals have fur the color of brown and black. Why don't they have more exotic colors, like purple and neon pink?

New research is cutting male mammals down to size. While we may think of hulking elephant seal bulls or huge stags, these males appear to be the exception, rather than the rule. A new analysis of more ...

National Geographic estimates there are between 50 billion and 430 billion birds populating the planet, outnumbering humans by up to approximately 50 times. Spread across 9,700 species, according to ...

Vietnam is a treasure trove of mammalian diversity: it’s home to the highest number of primate species in mainland Southeast Asia and a host of unique species found nowhere else on the planet. However ...

Hawaiʻi's role in a recent discovery in the forests of New Guinea is rewriting a scientific story that seemed finished thousands of years ago.

DENVER (KDVR) — Researchers at the Denver Museum of Nature and Science discovered a new mammal species from 65 million years ago. A fossil of a skull and jaws of the newly discovered species were ...

Baby dinosaurs weren’t coddled like lion cubs or elephant calves—they were more like prehistoric latchkey kids. New research ...

Mammals only have one life to live, but the length of that life varies greatly. While some shrews shuffle off this mortal coil in less than 14 months, bowhead whales can swim in Arctic waters for more ...