Oh, that's golden. So you jammed a needle somewhere in the peripheral nervous system, and therefore, the animal can't feel anything because you say so?
Ever read the testimonies of lobotomies? You know, where they used knitting pins to separate out lobes of the brain?
Oh yeah, they're supposed to be in shock and rendered instantly unconscious. Ever interviewed a creature that has been pithed?
This is just like the organ donors who are streaming tears as they are being cut apart on the operating table. Yeah, the diagnostics before they were rolled out on the showroom floor showed brain death. Yeah, I buy that the spinal cord/PNS has reflexes to a scalpel. Now how to you explain away a moan or tears from someone with severe brain damage being sliced to pieces?
There was a conference not too long ago in Japan where it was recommended to OD the donor in fentanyl. And not just because that would stop the donors from jerking. One of the participants put it eloquently that we think that we know, but we really don't know.
We really don't know.