I am curious. In considering our current and past evolution, there is one aspect in the origin of dominant species that has tickled my curiosity— that of sexual cannibalism. The most glorified, dominant, and perfected species of any given class, infraclass, or superorder partake in this evolutionary behavior. For example the order of Dictyoptera, which is commonly associated with cockroaches, has the Praying Mantis, which is a sexual cannibalist.
The Black Widow, of the order of Aranea, also enjoys the slaughter of her mate. In this example, as well as many others, it should be noted the male is without exception the victim and is grossly smaller in mass than the female. In comparing this phenomenon with recent changes in modern American women; the observation is striking.