I've had copperheads cross my path on the tee box thinking it was a stick. The most recent surprise was fishing my lake in the early evening in the dark with a headlamp and catching LMB and Brim when I noticed some movement on my left. I didn't move thinking it to be a LMB coming to explore my lure but when I did look it was a 3 ft long Mocassin presumably attracted to the brim flailing on the bank and the light? I moved slowly away and relinquished that bank to mr. snake. Next time I'll be more aware...