I think this little guy is either a Smooth or Rough Earth Snake, which Wikipedia tells me are found in the area and tend to max out at around 7" (about the size of this little guy). They feed primarily on earthworms and the like.
Found him lying in our driveway, curled up in this snake equivalent of the fetal position. One of our cats (probably Ruckus the Destroyer) clearly had chomped on it until it played dead. He was definitely punctured, but it looked like it might be something he might recover from.
I put him under a shrub in the garden. Checked back later, and he was gone.
Kim Mackenzie / Kim Hubbeling