I had a timber rattler come at me last year when I was on the tractor. I saw it crossing a fire lane and when I got within 15-20 feet it stopped. I stopped the tractor to see if I had anything to kill it with, assuming it was about to go into my young pines. I ended up having nothing but a claw hammer so I started to drive forward hoping I could run it over before it got in the pines. When I got within 6 or 7 feet it turned around and came at the tractor, struck the front tire then kept going under the tractor. I backed up and ended up getting a front tire on it eventually. I know it struck the front tire twice and I had 2 separate places with venom (or slobber or something) dripping down.