Animal Lives Matter provides a comprehensive analysis of the legal, philosophical, and ethical aspects of animal rights. It argues that the subject extends beyond the matter of our obligations towards animals, to include our wider responsibilities for protecting the environment. Drawing on numerous moral, political, legal, religious, and philosophical theories including utilitarianism, deontology, rights theory, social contractarianism, and the capabilities approach, the author meticulously examines the questions of sentience, speciesism, personhood, and human exceptionalism. Lucid, nuanced, and academically rigorous, this important book will be an essential resource for scholars of law, politics, philosophy, ethics, as well as policy makers and the general reader.