Alright, fleshed it out a bit.<br/><br/>Hmm, from an evolutionary point of view, in a world where you risk being eaten, I am pretty sure you would either end up with some genetical or cultural traits that could pass from one generation to another.<br/>For instance, you sweat really bad, so you are either hard to get a grip on, or you taste bad.<br/>On the other hand, people who were successful predators, would also pass on their traits if they find a suitable mate.<br/><br/>For instance, you could end up with some prey traits like:<br/><br/>Irresistable sexuality: Character gets to have sex before he is eaten because of pheromones. Of course, after the act is done, he might still be a meal, but he has passed on his genes to a new generation.<br/>Bad taste: Excrete sweat that taste badly enough for the predator to choose someone else.<br/>Acrobatic: The fittest survive.<br/><br/>The problem for predators who survive off their own species, if they always eat their own mates before sexual reproduction, then they won't pass on their own genes. Your genes could be too good for your own good.