Sorry, this is kind of a morbid question, but I am curious. How are cattle commonly euthanized when they are sick beyond treatment or otherwise put down due to mad cow, etc.? I was reading an article about mad cow today and how they had to put down 4 hundred and some calves in a day due to suspected mad cow. My grandfather always used a pistol...but do vets use phenobarb like they do with dogs and cats?