The Importance of Being a Moral Patient

I started to look for philosophers who had written about the issue of animals and the justifications for eating animals were just so bad I mean a lot of philosophers ignored it right that was one interesting thing that just wasn't an issue for them that they discussed. Aristotle said the more the less rational serve the more rational and he used that to justify us in eating meat but he also used it to justify Greeks in enslaving barbarians because barbarians he thought were less rational. To be what we call a moral patient that is someone whom we have to act morally towards it's enough to say they're capable of feeling pain or they suffer, then there's a question about whether we justify anything affecting pain