While hunting, I Stepped on a Pacific Rattlesnake and it bit my ankle right through my leather hunting boot. The snake never rattled or gave me any warning. I Survived the bite, but it "rotted out" or destroyed a chunk of flesh in my right leg, from the bite site, fang holes upward as the veins carry the blood back to the heart the flesh turned a purple black for about a foot an 1.5" wide and fairly deep. So I bought a pair of knee high, very thick horse hide boots..there are more products available today...some guys used stove pipe and duct tape in the old days.