Stiff: The Curious Lives of Human Cadavers

by Mary Roach

Whereas the larger-caliber (.45) Colt revolver bullets caused the cattle to drop to the ground after three or four shots, the animals shot with smaller-caliber .38 bullets failed even after ten shots to drop to the ground. And ever since, the U.S. Army has gone confidently into battle, knowing that when cows attack, their men will be ready.