Abstract

The questions of whether members of some non-human species of animals are persons, and--if so--which ones, are among the most difficult questions in ethics. The difficulty arises from two sources. First, there is the problem of how the concept of a person should be analyzed, a problem that is connected with the fundamental and challenging ethical question of the properties that give something a right to continued existence. Second, there is the problem of determining what psychological capacities, and what type of mental life, adult members of a given non-human species have. My focus in this essay is upon the first of these issues, and my discussion is organized as follows. In section 1, I shall discuss the concept of a person and the concept of a right to continued existence. Then, in section 2, I shall examine some important arguments aimed at establishing that non-human animals do not have a right to continued existence–in some cases on the grounds that they have no moral rights at all. Finally, in section 3, I shall turn to an examination of arguments in support of the view that non-human animals do have rights, including a right to continued existence.