Copperheads don’t like to fight. They lie still, covered in dry leaves, as their enemies approach. If their enemies get too close, they’re in for a wild ride. If copperheads are disturbed, they vibrate their tales against the dry leaves to imitate a rattlesnake. A copperhead’s bite hurts, but it usually doesn’t kill people. It damages the skin around the bite and makes the victim sick. Copperhead venom is being studied by medical scientists. It is possible it will be valuable in the study of human blood."