> That's rare outside of concurrent intertwined evolution (symbiotic relationships, parasitic relationships, etc).

You seemed to have carved out a way that everything falls under there

Everything evolves together. We're all on the same planet and working in the same ecosystem. Cross species collaborations isn't too uncommon and we even see it happen in some regions but not others.

The point is if you collaborate with your own you're very likely to collaborate with others. The smarter the animal the more common this is