Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Experts have laid stress on the fact that the female praying mantis and black widow spiders who eat their mate after sex have helped to create the femme fatale stereotype that proliferates in human culture. The practice of eating the partner after sexual activities is called sexual cannibalism. In fact, researchers have advanced that sexual cannibalism is a special case of cannibalism in which a female organism kills and consumes the male before, during or after copulation. Some researchers completely disagrees with the fact that the black widows, the praying mantis and other creatures are being associated with the term widows, praying, male sacrifice and so on. In addition to this, the opposing researchers have strongly affirmed that people including scientists and biologists, should see sexual cannibalism as a natural spider sex act since these species have been biologically programmed to do this.