Animals do have an interest in liberty

According to Alasdair Cochrane, liberty can have value for most animals only because it allows them to obtain other desirable things, such as well-being. With this he concludes that humans can continue to use other animals as long as they treat them well. In this article, I reject this conclusion by arguing against the positive conception of liberty in favor of its negative or republican conception. I suggest that it is sufficient for a being to be capable of agency in order to have an interest in liberty, which deserves to be protected by the right to be free.