I think there are 3 or 4 different kinds where I live, but they're pretty rare. I still am on the lookout when I go out hiking though. Right now, when the sun is out, because of the cooler temps, you'll have snakes out sunning themselves on the trails. We saw a couple when we went out to a local attraction and I warned a couple of people. They were grateful because they were afraid of snakes. I don't mind them.