By combining images taken through different filters in the visible and infrared, the MESSENGER data allow Mercury to be seen in a variety of high-resolution color views not previously possible. MESSENGER's eyes can see far beyond the color range of the human eye, and the colors seen in the accompanying image are somewhat different from what a human would see.
Bailey, D., Bailey, S. & Hufford, M. (1996) Copperheads Smell Like Cucumbers. [Audio] Retrieved from the Library of Congress, https://www.loc.gov/item/cmns001450/. Bailey, Dave, Sherman Bailey, and Mary Hufford.
The copperhead will likely give no warning before a bite. If it feels threatened it will probably strike. Their venom is a hemotoxin which attacks the red blood cells. It's likely that there will be tissue damage around the bite area, but if you're healthy and middle aged you'll probably be fine.