I think these questions you have asked all go together . Each answer separately doesn ' t explain why you shouldshouldn ' t eat pigs but together , holistically they better chip away at it . Also is killing morally impermissible or is it the suffering ? What if there wasn ' t suffering ? I think that ' s a better direction . Secondly I think you could have touched on the ' different species argument ' better . There are more than just genetics that stop cannibalism ' s permissibility . Lastly your ' low intelligence argument ' I think the reason there could be a difference between your disabled brother and a pig is that your brother has capacity . Your brother is a person and ' person ' comes with the capacity for more than a pig . That means something . Sorry if this is badly worded . I ' m a much better talker that I am commenter .