I would hope I know something about anatomy and physiology, I am an RVT...

And who said I killed them in a can? I euthanize litters with CO2 or canned air, pinkies all the way up to hoppers. They all pass away the same way; they fall asleep, breathing becomes slower and more eratic, and they die peacefully. It doesn't take more than 2-4 minutes in the ziploc bag. I guess 2 minutes while asleep isn't a timely and humane euthanasia? I have had dogs and cats do the whole agonal breathing thing for AN HOUR after they were deceased or animals with decreased cardiac function take a good 30 minutes to go to sleep.

Also, who said I used Isofluorane for recreational purposes? I am under the general supervision of a licensed veterinarian and I know all of the mechanics of an anesthesia machine. I use them daily where I work and at school(where I keep and breed mice and a few rats for the laboratory students to work with). I am allowed to euthanize animals by myself for the purposes of laboratory work and otherwise.

I surely hope you would stop with your presumptuous attitude as we all know where that leads. In the years I have done this, no one has ever mentioned that neonates have an increased resistance to carbon dioxide, not even veterinarians or my teachers(who are veterinarians and RVTs). Even research facilities such as the cancer research facility in Temple, Texas ran by Scott and White Hospital have never mentioned this and they euthanize hundreds of mammals daily. Hm..