Mollusk biologist describes how slugs make babies


John Kelly of the Washington Post spotted a pair of leopard slugs mating on his driveway. He called Megan Paustian, a research biologist who consults for Smithsonian's National Museum of Natural History, to explain how slug sex works.

After Paustian told Kelly that she was "kind of jealous" that he got to watch a live leopard slug sex act when she has only been able to watch leopard slug porn, she went on to explain how they do it: "They make a mucus thread and then dangle down on it. As they hang there, the hermaphroditic slugs extrude their translucent penises — out of their heads. They swap sperm."

Ever wondered how slugs make more slugs?

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