I wish mathematicians or philosophers or biologists or neurologists or psychologists would outline a definition of what intelligence is, outside of machine mach

I wish mathematicians or philosophers or biologists or neurologists or psychologists would outline a definition of what intelligence is, outside of machine machine learning or ai, so that we could learn something. For example a gorilla was able to learn sign language. Domestic animals can recognize objects or words. Orcas are social and intelligent. I'm a bit curious why computer scientists don't try to map or examine real neural structures.