The new species—dubbed Tyrannobdella rex, or "tyrant leech king"—was discovered in the remote Peruvian Amazon, according to a new study.

Puzzling scientists from the start, the up-to-three-inch-long (about seven-centimeter-long) bloodsucker has large teeth, like its dinosaur namesake Tyrannosaurus rex.



The T. rex leech uses its teeth to saw into the tissues of mammals' orifices, including eyes, urethras, rectums, and vaginas.

What's more, the newfound critter's "naughty bits are rather small," said study co-author Mark Siddall, curator of invertebrate zoology at the American Museum of Natural History in New York City.

Most leech genitalia account for large proportions of their bodies, which "makes sense, because your reproductive success