Comment by tyre
Philosopher Martha Nussbaum filed an amicus brief supporting Happy the elephant’s rights as a legal person. She has a wonderful essay about this and personhood more broadly[0]
It seems like there are judges in the US who are sympathetic to the argument that elephants are clearly persons with consciousness, desires, suffering, etc. but that the ramifications of declaring them as such would be too chaotic.
One day.
[0]: https://www.nybooks.com/articles/2022/03/10/what-we-owe-our-...