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 ...

The ancestors of our furry cats and dogs once looked similar to today's modern mongoose, a mammal with a long body and small, ...

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 ...

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 ...

All mammals begin the same in the womb. It's just a matter of time before each species develops its defining characteristics. Dolphins, for example, develop tiny leg-like limb buds during their first ...