Did you or do you or will you enjoy your long stretch of reproductive years? According to Cole's Paradox, you shouldn't. Many species need just a tiny increase of fecundity in order to justify one shot at sex, followed by death. Find out why you "should" die after you copulate, and why you don't.
Some animals, like certain insects, spiders, and plants, die immediately after mating. But what about mammals? A new paper shows that the males of certain mouse-like marsupials face imminent death after having sex — an evolved trait that arose on account of extreme promiscuity.