What kind of snake is this?

[RGINN]

...and my son agrees that buck8point nailed it, brown snake. Little bit different than what he's seen, but you always see regional variations. And an edit, another herper told me it's specifically a Dekay's Brownsnake.

 

[Gare]

I think most poisonous snakes have a triangle head

 

[RGINN]

Generally in the US the triangular head is an indicator of a venomous snake. Except for coral snakes.