Despite not being particularly mammal-looking, the earliest true mammals began to rise about 200 million years ago, when dinosaurs were still roaming Earth. However, the therapsids still had important ...

Before the time of the dinosaurs, a naked, warm-blooded egg-layer known as a gorgonopsian sipped water from Pangea's tropical floodplains amid herb-grazing reptiles off what's now Mallorca in the ...

Domestic dogs are among the most diverse mammals on the planet. From the tiny chihuahua to the towering great dane, the ...

When most people think of whiskers, they think of cats — even the most straightforward drawing of a cat often includes long whiskers — but did you know that dogs have whiskers too? Just like cat ...

The black-tailed prairie dog is an intelligent, sociable rodent that's a keystone species in the prairie ecosystem it calls home. This precocious little mammal is perfectly suited to its environment, ...

This is a preview. Log in through your library . Abstract This study addressed the initial effects of a reintroduction of Gunnison's prairie dogs (Cynomys gunnisoni) on resident small mammal and plant ...

RIO DE JANEIRO - High above this Brazilian city, in a jungle blanketing a mountain, the turtles were out and the scene was hopeful. Scientists were reintroducing 15 mud-caked tortoises to this urban ...

Fossil-hunters in China have discovered two skeletons from a kind of animal never seen before: a dog-sized mammal that lived about 135 million years ago. The discovery overturns the conventional ...

Why are there no mammals smaller than a shrew? The answer to this question comes down to heat loss. Shrews are mammals, so in common with other mammals, they maintain a constant body temperature ...