Leeches have a reputation built almost entirely on blood, but the reality of how they feed is far stranger and more varied ...

A newly discovered bloodsucking, olive-green leech with three jaws and as many as 59 teeth has been found about 40 miles outside of downtown Washington. A team led by a researcher at the Smithsonian's ...

A Smithsonian researcher zoologist and her team have discovered a new species of leech in North America for the first time in over 40 years. Anna Phillips, who is also the museum's curator of ...

The new T. rex has ferociously large teeth lining a single jaw. But its length is less than 2 inches. Tyrannobdella rex, which means tyrant leech king, is a new species of blood sucker that lives in ...

WASHINGTON, D.C. — For the first time in 40 years, scientists have discovered a new species of medicinal leech in North America in a Maryland swamp. A team of researchers made the discovery in 2015 ...

Macrobdella mimicus, the first new species of medicinal leech discovered in over 40 years. (The Smithsonian Institution) Macrobdella mimicus, the first new species of medicinal leech discovered in ...

The bite of a worm with several hundred teeth leaves a distinctive mark, as Victorian leech collectors knew well. Wading bare-legged through Britain’s bogs they enticed leeches to sell to doctors for ...