Identificaciones de thom

One of the only snakes I've seen in my yard. It was about 10-12 inches long, found on the porch (smooth concrete, on which it had a really hard time moving - spent most of its panic escape time wiggling back and forth rapidly and only moving forward slowly).

I'm not a snake expert, but a friend says that the keeled scales eliminate Smooth Earth, and there is too little contrast between the head and body for Flathead snake. Confirmation would be appreciated!

One of the only snakes I've seen in my yard. It was about 10-12 inches long, found on the porch (smooth concrete, on which it had a really hard time moving - spent most of its panic escape time wiggling back and forth rapidly and only moving forward slowly).

I'm not a snake expert, but a friend says that the keeled scales eliminate Smooth Earth, and there is too little contrast between the head and body for Flathead snake. Confirmation would be appreciated!