[Bob Kontak]

Last year, my Dad lost blood internally (stomach ulcer) and had fluid in his lungs. He could not get enough oxygen into his body and looked very afraid while panting. He knew something was very wrong.

Nitrogen would replicate this sensation, yes? The animal/human is simply being asphyxiated and will know?

My hate side wants a murderer to feel pain but the logic side does not.

No way on a pet.