(sufficient space and proper facilities).
If you want to focus more on a specific area like or medical testing (sufficient space and proper facilities)
Neuroscience has confirmed that octopuses, crabs, fish, and even bees likely experience pain and pleasure. As the circle of "who matters" expands, welfare laws must catch up. Several countries (like the UK) have legally recognized decapods (lobsters, crabs) as sentient beings—a huge win for welfare, moving toward rights. (sufficient space and proper facilities)
Here is a short essay exploring the balance between these two concepts and why they matter today. The Moral Compass: Navigating Animal Welfare and Rights (sufficient space and proper facilities)