The book explores the theme of promoting the environment and animal rights through a comparative and multidisciplinary approach. Most of the authors have a legal background, but the approach is not limited to law, because today more than ever a synergy between disciplines appears essential, and only by bringing together different perspectives and methodologies is it possible to build a valid alternative to the scientific and legal anthropocentrism that is still prevailing. Science and law must work together to create an alternative to the present reality, a reality that con-tinues to mortify animal beings and is progressively destroying our planet. Recog-nizing animal beings as legal subjects is crucial not only to guarantee their welfare from a legal point of view, but also to safeguard human welfare, since zoonotic diseases, such as those responsible for global pandemics, highlight the risks of uncontrolled human-animal interactions. Rethinking legal paradigms thus becomes imperative in order to prevent future crises and promote a more ethical and sustainable coexistence between human and non-human beings. In this volume, we have tried to propose a new paradigm by combining legal and medical-scientific expertise in a truly One Health perspective, hoping to contribute to the building of a credible alternative to the destruction of the planet we are witnessing.