evidence: But maybe there is some residual force to arguments from the natural. Yes, some things are natural and immoral, but perhaps the fact that particular behavior comes naturally counts at least somewhat in favor of its morality, even if other factors can outweigh the moral power of naturalness. After all, we do not judge lions to be acting immorally when they kill and devour their prey in part because lions are naturally carnivorous. On the assumption that our nature is relevant to figuring out what we ought to do, it is worth asking whether human beings are naturally and fundamentally a carnivorous species like lions or even an omnivorous species like bears. [...] Want to learn more about how human anatomy compares with that of carnivores and omnivores? The video below is instructive. You can see more common justifications for eating animals here.