I've found Oderberg's discussion of animal rights in Applied Ethics to be very informative.
I suppose it can be considered an elaboration of Aquinas' treatment of the issue (absent the biblical references and with less explicitly Scholastic wording).
I've lent the book, so I can't check the correctness of my presentation (in any case, I consider my argument to be correct), but the key theme of it is that the ability to know purposes-as-reasons-for-action is a precondition of having rights. The goods of brute animals do not amount to reasons for rational human actions, therefore there is no 'conflict of rights' (the one present in murder situations, for example). The reasons for thinking that something is morally wrong when it comes to animals, therefore, concern privations of human goods, private or common.
If this reasoning is correct, instances of animal killing for purposes other than procuring food that make moderns cringe, like bullfighting or fox hunting, are not immoral per se, but only per accidens (if pursued for vanity, love of cruelty etc.). I personally believe the mentioned traditions to be very good, as they are arguably conducive to growth in virtue and are reported to be good sport.
P.S.
There are other considerations, such as risk, obviously pertinent to the cases of the corrida de torros and (sport) hunting , but I'm yet to find a detailed treatment of the ethics of risk, so I confess I don't have much to say on that topic.
Last edited by GeorgiusThomas (6/29/2015 4:22 pm)