Mammals are the only animals to suckle milk in infancy. The Microdocodon gracilis fossil that was found is the first example ...

Animals without a backbone are called invertebrates. Vertebrates and invertebrates can be sorted into smaller groups. Vertebrates, for example, are divided into mammals, birds, reptiles ...

Animals are showcased in pictures in the Readers Photo Challenge. Sixty-two photos were sent in by 17 readers. Here are some ...

For example ... and these animals were probably living and moving in their environments in ways that we hadn't appreciated before. There was a lot happening and mammals today are really quite ...

Rising H5N1 bird flu cases in the U.S. prompted the CDC to study the virus in ferrets, revealing it may have the potential to ...

In “Prehistoric World: Over 1,200 Incredible Mammals ... animals that didn’t already have one, using information discerned from the scientific name. The extinct cat Miopanthera lorteti, for ...

Scientists say the fossilized bone appears to represent the oldest example of a type ... vertebrates with jaws. Modern mammals evolved from within a group of animals called Cynodonts.

But that's only part of the picture, according to a UC Santa Cruz ecologist renowned for using biologging data to tell a ...

The "RNA world" hypothesis proposes that the earliest life on Earth may have been based on RNA—a single-stranded molecule ...

If we became crab-like it would be a slightly horrifying experience, an expert tells us. Crabs molt their entire outer exoskeleton, from their eyes to their gut.

Scientists at Harvard University looked 300 million years into the past to understand the locomotive habits of modern species ...