Our earliest mammalian ancestors avoided the dominant dinosaurs by only coming out at night and having uniformly dark, ...

For a long time, we didn’t know, but now they must finally show their true colors: early mammals had dark brown fur. This ...

A study of the fossilised fur of six mammals from the Jurassic and Cretaceous periods has found they were all greyish-brown ...

Ancient mammals that lived in the time of dinosaurs were mostly the same dark-brown colour, according to a new study providing clues about how those mammals evolved as they faced giant predators.

The early mammals that lived alongside dinosaurs over 150 million years ago likely had dark, dusky brown fur, helping ...

As seals dive more frequently—and for longer—than humans do, the range of carbon dioxide in their bodies varies more widely.

Discover how black bears, raccoons, and opossums survive Michigan’s frost — through torpor, denning and foraging.

Find Mammals Isolated stock video, 4K footage, and other HD footage from iStock. Get higher quality Mammals Isolated content, for less—All of our 4K video clips are the same price as HD. Video Back ...

Saving rare species from extinction requires extraordinary measures. The black-footed ferret is one of North America’s most endangered mammals. Once thought to be extinct, after the species was ...

Amanda Plank joined Black Pine Animal Sanctuary in January, and she hopes to increase visibility and recognition of the ...

Mammals are distinct from birds, reptiles, amphibians, fish, and invertebrates in three key ways. First, all mammals have fur or hair. In some species this presents as a very conspicuous, thick coat, ...

What you’d be less likely to notice are your closest relatives. Early mammals were small, strictly nocturnal, and altogether less showy–verging on downright drab, as supported by a study ...