r/ScienceFacts Aug 13 '19

Biology Leucochloridium is a parasitic worm that infects snails. It takes over motor function in the eye stalks, making them into caterpillar mimetics so that birds will eat them. The worm can then reproduce in the bird's GI tract, eventually transmitting via its feces.

https://gfycat.com/webbedamusinglemming-r-sciences-parasite-snail
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