Yes, all mammals are warm-blooded, but not all of them can be as big or ferocious as a lion. In fact, all five of these smallest mammals in the world clock in at about 1 ounce or smaller ...

Ever since 1993, when a deadly disease outbreak in the Four Corners first revealed the presence of hantavirus in North ...

From the Etruscan shrew, a creature so light it could rest on your fingertip; to the bumblebee bat, the planet's smallest flying mammal, these tiny animals have developed incredible survival traits.

The Pygmy Shrew has the distinction of being Ireland’s smallest mammal. It differs from mice in that it is tiny, has a long snout, a hairy rather than a naked tail, and red-tipped teeth.