The gold standard for welfare is the originally developed for livestock but now applied across the board:
Understanding the "deep feature" of animal welfare and rights requires distinguishing between their scientific, ethical, and legal foundations. While both share a goal of protecting animals, they operate under fundamentally different frameworks. 1. Animal Welfare: The Science of Care Animal Welfare and Rights: A Growing Concern "Five
Most agree on basic welfare (food, vet care). However, rights philosophy questions whether "pet ownership" is ethical, as it treats a sentient being as property. Many rights advocates prefer the term "animal guardian." vet care). However