Rights of Nature (RoN) is a movement that recognizes animals and ecosystems as rights-bearing entities and draws inspiration from Indigenous worldviews. One Welfare emphasizes the interconnected health of humans, animals, and ecosystems and rejects fragmented approaches to harm. A key challenge today is the difficulty of establishing legal standing. RoN addresses this gap by establishing legal guardianship for nature and animals. This presentation will examine relevant legal cases, including Estrelita (Ecuador), Southern Resident Orcas (Washington), Sea Turtles (Panama), Salmon (Washington), and Whales (New Zealand). RoN and One Welfare advance a legal framework that recognizes the interdependent well-being of humans, animals, and ecosystems.