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

The new research is the first to look back at early mammals in full color. Using advanced fossil imaging methods and a thorough examination of the pigment-producing cells present in living mammals, ...

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 ...

These 20 animals are so strange they look like science fiction creations, but they’re completely real. Nature is far more bizarre than you think.

A monkey descending a tree trunk often keeps its head up, moving almost like a cautious climber backing down a ladder.

(© Andy Myatt / Alamy) Prized for its “medicinal” properties in parts of Asia and as a trophy species by South American hunters, the red deer (Cervus elaphus) has spread from its native Eurasia to the ...

Despite their underwater habitat, whales are mammals. Mammals are not solely terrestrial; some, including whales and dolphins, are fully aquatic the University of Michigan Museum of Zoology reports.

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

No, birds are not mammals. Rather, they are avians. Mammals are characterized by their milk glands, hair, vertebrae and their birthing of live young (being viviparous), according to Britannica.

Huge die-offs of elephant seals occurred after the virus gained nearly 20 troublesome new mutations, scientists found. By Apoorva Mandavilli Elephant seals in South America died in massive numbers ...