From the Etruscan shrew, a creature so light it could rest on your fingertip; to the bumblebee bat, the planet’s smallest ...

In Myanmar, a scientist with Smithsonian’s Global Health Program examines the world’s smallest mammal, a bumblebee bat. Roshan Patel / National Zoo Earlier this year, when leading infectious ...

They are found on every continent and in every ocean, and range in size from tiny bumblebee bats to enormous blue whales. One reason for their success is the way they move. Mammals as a group use ...