Well, the Biblical animal references are constrained to a region which had no familiarity with the higher primates, namely African, nor with sea mammals such as whales, dolphins, etc. Then again, Egypt had done much soul/spirit investigation and none of that is mentioned, either. Are you trying to pinpoint where earth animals (including us) seemed to take on a hyper-electro-chemical soul?No, I think that the fleshly soul is electro-chemical.
I'm simply observing that uniquely in Man, is the spiritual capacity to interact with the Divine.
IOW, the electro-chemical constitution of Man is spiritually-inspirated.