Say you have an animal and you swiftly decapitate it. As an organism, it is now dead (right?), but in what level (below organism) does death immediately set in? When an animal is swiftly killed, do all of it's organs immediately stop functioning? Would that organism's epidermis continue to create new skin cells for a while after it's head was severed? Would food in the digestice system continue to pass through it? How long would it take for the individual cells of an organism to die, is it totally dependent upon how much ATP is available? Anything else you'd like to add about what happens/does happen after death?