  Thus, animals are not objects of moral appraisal on the view, since they lack the necessary reflective capacities. Animals also lack the capacity for moral discrimination and would therefore seem to lack the moral sense. This raises some interesting questions. It would seem that the moral sense is a perception that something is the case. So it isn't merely a discriminatory sense that allows us to sort perceptions. It also has a propositional aspect, so that animals, which are not lacking in other senses are lacking in this one.