I'm curious to hear arguments from people who believe that the wellbeing of animals has moral value, but value the wellbeing of humans many times more. My thought is that if one has a basically utilitarian, nondiscriminatory perspective, the only thing that would cause an individual's suffering to matter more would be if that individual were experiencing a greater degree of suffering. While greater complexity of mind causes an individual to be capable of a greater range of emotions, I don't see a reason to think that it would cause a much greater intensity of simple emotions like physical pain. Physical pain in humans can be just as bad as, or worse than, more complex emotions. Why wouldn't we think that it would be the same in animals?