This little guy (12 to 18 inches) was on the screen trying to get a lizard. I went out to get a photo and it was gone. A few minutes later the cat was chasing something on the back porch. Sure enough, it was this snake. At first we thought it was a pygmy rattler but after I caught it and took some photos and compared it to the guidebook photos, we are sure it is a baby Black Racer. I took it way out back and let it go.