Sensitive hearing may have evolved in mammal ancestors far earlier than scientists once believed. By modeling how sound moved ...

Whales, dolphins and other marine mammals are highly social, but those social ties can also help diseases spread through ...

A surprising new study has found that blocking reproduction in some mammals may increase their life expectancy by an average ...

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

Ohio’s white-tailed deer might seem like an obvious state symbol, but that familiarity is exactly why it works. Few animals ...

A heartwarming rediscovery has been made on the world’s largest tropical island. Attenborough’s long-beaked echidna ...

For tens of millions of years, whales have been a part of the oceans. Because of this, it would be easy to believe that ...

Discover more about the egg-laying monotremes of Oceania and the ancient traits they still carry.

It's not uncommon for scientists to uncover new fossils from the ages of dinosaurs, but every now and then, a discovery reveals much rarer information. Scientists unearthed the fossil of the small and ...

SAUSALITO, Calif. (KGO) -- Juvenile seals and sea lions have no trouble making themselves heard. But deciphering the traumatic events that landed them at the Marine Mammal Center Hospital in Sausalito ...

The world's oldest known mammal has been identified using dental records – predating what scientists previously thought was the first mammal to walk the Earth by millions of years – according to new ...