I’m curious if animals besides humans detect carbon dioxide buildup in the bloodstream, the way humans do. (As I understand, we don’t sense the absence of oxygen … just a buildup of CO 2.) Is this trait common to all primates? All mammals?
I ran across the AVMA guidelines for humane euthanasia and for rodents, guinea pigs, etc. and they call for carbon dioxide chambers. Does that not cause the same panic & other reactions in non-humans?
(Still looking for a non PDF link for y’all to cite.)