Leeches might seem like relics of a bygone age of medicine, but they haven’t outlived their usefulness to people yet. The freshwater leech Helobdella austinensis can eat its weight in snails every day ...

There's an abundance of freshwater leeches in New Melones Reservoir this year, prompting health officials to remind the public that the annoying bloodsuckers pose little threat to humans. It's typical ...

As we tidy away the Dracula capes and glow-in-the-dark plastic fangs for another winter, one notorious blood sucker has had a particularly good year. In Ireland, the leech was driven to extinction in ...