This subadult Black-Tailed Rattlesnake, Crotalus molossus, is the typical low-contrast brown seen in the Sonoran desertscrub areas of most of Arizona. In many areas this can take a green, orange, or even pinkish tint, but this one is pretty straight brown. Nonetheless, their pattern is one of the best looking, in my opinion, of the large-bodied rattlesnakes in Arizona, and their calm attitude is always welcome, except for being a bit difficult to photograph as they continually try to slide away without a fight.
Tags: black-tailed, Blacktail, Crotalus molossus, desert phase, reptiles in arizona, Superstition Mountains