Comment by Rygian

Here's one "philosopher" 's test:

Can it feel hunger, thirst, pain, sexual desire, fear, tiredness?

If yes to any of the previous: does it have agency to address and satisfy those feelings?

If yes to any of the previous: is it able to willingly delay instant gratification?

If yes: conscious.

If not: instincts-based being.

Note: you will find it challenging to agree on definitions of the words "feel", "satisfy", "willingly" and probably all the rest.