I wasn’t aware of this phenomenon but this explains a story of mine. Halloween when I was a kid, we were out with my friend’s mom trick-or-treating when a copperhead jumped out into the street we were walking on. I don’t think I’ve ever seen a human react faster, friend’s mom picked up a rock, threw it, and struck the snake in the head. Part of that was probably mon instinct, but I wonder if she had a snake sense.