It's a wolf spider. It can inflict a painful bite but not generally aggressive and it takes a lot of handling to make it do so. They are excellent nocturnal hunters and in a given night they can eat a dozen or more insects. One of the few species I take out of the house when I catch 'em.
I use to handle wolf spiders as a kid and was never bit. I don't mind spiders and will take them outside if I find one in the house. Unless, of course, it's a brown recluse or black widow. I've only seen a black widow, in person, once in my life.