As I've explained elsewhere, pretty much everyone is taught how to systematically devalue the equal needs of (at least some) others. By the time we reach adulthood, this 'skill', and the meritocratic moral logic that undergirds it, are deeply rooted. And while people differ greatly in how broadly they apply this logic, basically none of us are able to ignore the many distractions (skin color, nationality, gender, ethnicity, intellectual ability, wealth, mannerisms, religious affiliation, and so on) that we are taught to take into account when it comes to recognizing and valuing other people's needs. As such, hardly any of us are able to embody the kind of inclusiveness, egalitarianism and solidarity that most of us do see as the ideal (that we mostly fail to live up to in practice).
The questions I want to explore here are, first, how we apply this 'skill' in the context of our thinking about the other animals, second, how this affects our treatment of them, and third, how the fact that we allow ourselves to behave and think this way towards the other animals affects how we treat and view other humans.