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What to Do If a Leech Attaches to You

The first time I was bitten by a leech, I was swimming in a West Virginia river. I remember the scene perfectly: I crawled out to dry off and tried to wipe the mud off my knees, but the leech wouldn’t ...
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It's as big as a rolling pin and can drain a tablespoon of human blood in a single meal, thanks to its razor-sharp hypodermic needle-like mouth

Deep in the Amazon, a giant leech lurks, quietly feeding off victims in rivers and swampy waters, largely unseen.