If you look online for Idaho's reptiles, you should be able to pick it out of a "line-up". There are similar-looking lizards all over the U.S. & you need the location to really
pin it down. I'm not at all familiar with Idaho's wildlife...also, that photo is pretty far away for details.
Rudeness is the weak man's imitation of strength. Eric Hoffer(1902 - 1983)