Man, I wish I had known about this when I had to euthanize my last 2 ferrets. They both ended up getting adrenal disease and it causes a VERY prolonged and painful death. I ended up ODing one with Tylenol and the second went to the vet. I couldn't handle doing the Tylenol way again. I din't let the second get as far along as the first either. If I need to euthanise again, I'll do it with the vinegar and baking soda.