A study reveals how seasonal brain shrinking helps some mammals survive winter, offering new insights into brain plasticity ...

The definition of a mammal is a warm-blooded vertebrate animal distinguished by the possession of hair or fur, the secretion of milk by females for nourishing their young, and the birth of live ...

A new study reveals the surprisingly convergent evolution in the inner ear of mammals. An international research team showed that a group of highly divergent mammals known as Afrotheria and distantly ...

Illustration showing Repenomamus robustus as it attacks Psittacosaurus lujiatunensis moments before a volcanic debris flow buries them both, ca. 125 million years ago. (Michael Skrepnick via ...

At first glance, this mammal looks like a horse gone terribly wrong. But, in reality, Chalicotherium is far from a botched ...

Dolphins, whales and seals are highly social animals. Many live in groups, form long-term relationships, and repeatedly ...