Sex is a chain of activities in the life of every living thing (animal and human). However, in the animal kingdom, there is a very deviant sexual habit of eating their partner after sex.
Sexual cannibalism is when a female cannibalizes her mate prior to, or after copulation. Wikipedia
In the animal world, there is what is called sexual cannibalism.
Not only spiders, praying mantises are also rumored to have this kind of habit. males and females have different goals in having sex.
If the male is truly 'hungry' for sex, not for the female. The female is more impressed that she is really hungry and 'surrenders her body' to the male, but in return she will get food by eating the male's body.
Uniquely, even though the male praying mantis already knows that he will die at the hand of the female, he still does it. That such a thing has become a pattern of the sexual chain in the animal world.
Fortunately, this cannibal's sexual behavior, although it may exist, is very rare in modern human life. I don't know what happens, if this habit is adopted by humans, surely the number of men will be drastically reduced.
