Arizona has an abundant supply of snakes--particularly rattlers. In fact, there are 17 rattlesnake species. The most common one is the western diamondback. I had one in my yard this morning. It was doing snake stuff. I told it to head on home, before some of my neighbors tried to kill it.
My longstanding policy on wild animals is if you leave them alone they'll leave you alone. It has served me well and I've even lived in two national parks.. So the snake, a fairly small little guy scooted off to do whatever snakes do. The local fire district will relocate them. Some people try and kill them. The snake is just being a snake and I just let it go on its way. Our neighborhood has open desert on two sides. There's nothing to stop them from coming in. Strangely, this is the first one I have seen in my yard.