Flashback Friday: Spiders perform female genital mutilation to ensure faithfulness.

If you think love in the animal world is sweet, think again! From ducks who rape using corkscrew penises to a bedbug who “pierces the female’s abdominal wall with his external genitalia and inseminates into her body cavity” to spiders who self-castrate in order to fight harder, animal sex can be, well, beastly. But this study takes things to a new, and horrible, level. Here, scientists report that male orb-weaving spiders perform genital mutilation on females to ensure they never mate with a

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