When Nick was little, there had been a cartoon he loved called "Inspector Black Cat." One episode could be considered a "
childhood trauma."
On a summer night, a pair of mantises tied the knot, only for tragedy to strike that very night. The innocent mantis groom died a horrible death, and the killer ultimately turned out to be the mantis bride.
In biology, this behavior was called "sexual cannibalism." Its main purpose was to provide the female with nutrients, thereby increasing the offspring's survival rate. Compared with "black widow" spiders, certain species of mantis were actually even more extreme in this regard.
Mantises had a special physiological structure: the nerves controlling mating were located in ganglia in the male's abdomen. After the male's head was eaten, the brain's inhibitory effect was instead removed, making the entire mating process longer and more vigorous.
In the cartoon, even the righteous Inspector Black Cat expressed his helplessness in the face of this tragedy of instinct-driven cannibalism, ultimately declaring the mantis bride innocent and releasing her.
But Nick still remembered something he had said: he hoped entomologists could find a way to solve the "Praying Mantis Girl's" nutritional problems after marriage.
In the cartoon, Inspector Black Cat's words had actually been an anthropomorphic expression. Nick did not know whether any scientists would really research a subject that seemed to have little prospect of practical application.
But now, he needed Rosalie and Monroe to help find a solution.
Times had changed, after all. Although Nick was not a particularly willing Grimm, when faced with something like this, he could hardly follow the example of earlier Grimms and simply kill them all.
Although America was a country that essentially practiced "social Darwinism," that was ultimately only the underlying logic of how its society operated. On