I know there has been a lot of discussion of snakes lately, and I'll admit to being a guy who doesn't like snakes. I wasn't happy to find this guy in the house- quite small but a mean little guy- striking and hissing until I got him into a box and outside. Not sure how he got inside. Can anyone tell me what type of snake this is? Please tell me it's harmless and will eat some of the voles in the lawn where we released him.