Do praying mantis bite their mates head off? The short answer is yes—female praying mantises sometimes bite off the heads of their male partners during or after mating—but the full story is far more nuanced than the sensational headlines suggest. Worth adding: this is one of the most enduring questions in popular biology, often asked by students, gardeners, and anyone who has watched a nature documentary. Sexual cannibalism in praying mantises is a real behavior, yet it does not happen in every encounter, and understanding why it occurs reveals fascinating insights into evolution, survival, and reproduction in the insect world.
What Is Sexual Cannibalism?
Sexual cannibalism is a behavior in which one partner consumes the other before, during, or after copulation. While the praying mantis is the most famous example, this phenomenon also appears in certain spiders, scorpions
