Mating
SciShow Tangents
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SciShow Tangents - What Is It All About?
Researchers weren't sure if the dead caterpillars being fed on were killed in some other non-butterfly way, or if they had simply been drank to death by their elders. One slightly more innocent explanation for this is that the butterflies are just accidentally scratching open caterpillars when they're scratching leaves. It's a very romantic goopy special connection between garden snails and Gastropods. A French occultist thought that after swapping mucus and gametes, a mated pair of snails would be telepathically connected.
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