I've posted about the Western Diamondback Rattlesnake previously. The Arizona Sonoran Desert Museum has a program to introduce people to these reptiles, native to Arizona. We've even had what I thought was a large specimen (between four and five feet long) in our back yard for a summer. (We knew where he was, and he wasn't a bother.)
Our son in law Fred is an avid outdoorsman and hunter, and he hunts regularly in the west. Fred keeps an eye out for interesting articles, and sends them our way when he finds them.
Here's his most recent find!