If no rattles it is not a rattlesnake which I don't know as well but it is not a copperhead or cottonmouth or coral snake which are the other poisonous snakes in the US. They give me the whiles as well.
Mary D
Usually it's a rat snake or corn snake. Harmless. Scared of humans.
If you aren't SURE, and can't identify it, NEVER assume it's NOT dangerous.
In my part of the country, the rat snake are solid black, adults being about 5' long, and up to about 2" at their thickest point.
We LIKE the (after all, they eat the rats. Amd mice. But sometimes the dogs find one and play "tug-of-snake"....
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