The law confers rights on non-human entities, namely nature, machines (AI), and animals. While doing so, the law is either viewed as progressive or sometimes as abstract and ambiguous. Despite the critique, it is undeniable that many of the rights of non-humans have come to solidify in statutory and constitutional rules of different systems. In the context of these developments, the article sheds light on the core justifications for advancing the rights of non-human entities. In addition, it discusses the conditions (...) for the emergence of these rights and the non-binding normative statements adopted by different stakeholders for advocacy. These include the Charter on the Law of the Living (2021), the Toulon Declaration (2019), and the Vienna Manifesto on Digital Humanism (2019), etc. The paper also discusses the relevant theoretical frames, namely post-humanism, digital humanism, and multi-species justice, followed by selective critical views on the subject. (shrink)