By searching "animal" in our online study aids (West Academic, Lexis Digital, Aspen) you'll find it covered in a variety of legal topics, agriculture, property, torts, criminal behavior, domestic violence, wildlife, negligence, etc.
Below is not an exhaustive list of books. These are related to Animal Law, Animal Rights and Animal Welfare, Animals and Philosophy, and Animals and Theology.. Some are ebooks, some are in our library.