Stepped over a 38" copperhead in the garden a couple of months ago. I have pics of it somewhere but it was as big as many rattlesnakes. You would not believe how sharp the fangs were. A national park ranger told me it was probably a male and if it had been a female it, most likely, would have bit me instantly.
A local guy cleaned the lot off that had his mom's house upon it. This lot had grown up into weeds and brush. He wore cowboy boots while working and, over the course of the summer, got bit three times by copperheads. On every single occasion the snakes bit him above the boots. The first two didn't give him a whole lot of trouble but the third one nearly done him in. The doctors thought they might have to amputate his leg. He had a BAD time.
Everyone needs to be extra careful....and don't forget.....dead snakes can kill you the same as live ones. They all can give us heart attacks!!! Run!!! Kill those things!!!!