I know, I often start strange threads for no reason, but I think about strange things and have no on else to talk to.
Soooooooooooooo, what do you think about inter-species morality?!? Obviously, the major manifestation of any kind of conscience in this area is vegetarianism. I'm not a vegetarian myself, though I think I should be and I just choose not to because I'm slightly evil and prefer the convenience (and taste!) of meat.
The reason I ask is a little more off-the-wall than the usual arguments. I know we treat animals badly. I know it's a naturalistic fallacy to say that we evolved to eat meats and should continue to do so. What I'm interested in is aliens!
As far as we are concerned, there is nothing immoral about killing (murdering?) a chicken, for example, and eating it. This is likely because of the extreme difference in sentience. So what if an alien species with a consciousness and intelligence far above ours saw us in the same way we see chickens? Then is it morally right for them to harvest us if they want to?