Hey, stop picking on leeches. They have a long and distinguished role in medical care. In fact, even today they are used to remove blood from certain kinds of traumatic injuries. They are specially raised in a clean environment and are, at least, free of serious germs. They produce an anticoagulant which is also being medically studied.
Besides, leeches steal the scene from Hepburn/Bogart in "The African Queen."
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