Perhaps I’m not thinking this through or I’m simply being unambitious but I don’t view effective altruism as asking you to take responsibility for the whole world. I certainly don’t feel an enormous weight on my shoulders. I view it more as taking responsibility for the difference between what you would ordinarily do and what you could do if you maximised your impact, which does admittedly require consideration of the whole world.
If valid, maybe that can make effective altruism a little more palatable.
Animals have experience? Short answer: Yes