Fet,
I am not picking on you, but there is no such thing as a poisonous snake.
-( weird pet peeve of mine)-
Snakes come in two classes, venomous or non-venomous.
In North America there are only four you have to worry about and each are easily recognizable.
Moccasin, Copperhead, Rattler and Coral.
Very few people die from venomous snake bites-(hurts like hell, yes!)- in North America.
Years back it was 10, or less, people a year.
On a good note, all snakes are edible.
-(and taste like chicken)-
So if one bites you, kill it and eat it and have the last laugh.