הזיהויים של arizonarattlesnakehunter

It’s such a bad photo I contemplated just not posting it, but I think some people will be able to see it. He’s sitting in this alley, behind the Mex PV, middle of the picture, facing right. His back leg is visible, along with his front legs. The small white mark under his haunch was something twitching, so I assume his tail or foot? I feel like the tail would be too short though… I had seen him cross the street before this, so I knew what he was. Wish I had been on the other side of the street…