As though having both male and female reproductive organs was not enough, when it comes to mating, flatworms have difficulty deciding which partner will take on which role. While the male gets a free pass and swims away after the act, it is the females that will dedicate time to raise the offsprings so clearly we understand the confusion. In overcoming this dilemma, flatworms will battle it out through a penis duel whereby they try stabbing each other with the one inseminating first winning the desirable role of the male.
Red-Sided Gater Snakes
These snakes take gang raping to higher heights with the female snakes being sought after by up to 100 males. Winning the heart of a female snake may seem like an obvious solution, but for the males, they have no time for slithering up into a queue as they go at it all at once. However, to prevent her demise, her health should be pertinent because overbearing attention from the males can lead to her death, but the lucky snake gets to do the deed while the other 99 watch on jealously. Assuming she is in good health, once completing the act, she rolls around in a desperate attempt at making her escape.