There was even a 1959 black-and-white horror film, called "Attack of the Giant Leeches," playing on our fear of them. But I would argue leeches have a sense of mystery and excitement.

Leech therapy involves applying leeches to a wound to increase circulation, improve blood flow, and promote healing. Its practice has varied over time, but it continues to be used in modern surgery.

There was even a 1959 black-and-white horror film, called Attack of the Giant Leeches, playing on our fear of them. But I would argue leeches have a sense of mystery and excitement.