Interesting thread. Snakes don't especially bother me; I have handled a 12 foot python, but steer clear of the poisonous kinds.
One year in Eastern California I found a cooperative subject, a Sidewinder. Interesting critters as some have horns on their heads like little dragons. Famous of course for their sidewinding locomotion.
Supposedly as Rattlers go, they are the least dangerous. Please Excuse my photo of a photo, as these were taken BD (before digital). The yellow stripe in the second photo is the center stripe on the remote road I was on, near Death Valley - it gives some scale of the little guy.