Take an axe or a machete and hack it into ten pieces and bury the pieces in a swamp that has lots of spooky looking hollow trees. If it comes back to life fully reassembled or as ten smaller snakes on a foggy night under the full moon, then it is venomous -- and it (they) will track you down and bite you and your loved ones.
If it doesn't come back to life, it wasnt venomous. But you'll have to watch out for other venomous snakes in the area, which otherwise would have been eaten by the non-venomous snake if you hadnt killed it. They, too, will track you down and bite you and your loved ones.
If you dont kill it, it surely is poisonous; and on the next foggy full-moon night, it will track you down and bite you and your loved ones.
In any case, the mere act of seeing a snake will result in you and your loved ones being bitten by a poisonous snake the next foggy full moon. And to make things worse, even if you dont see it -- well, just never mind. In any case, you and your loved ones are fucked come that next foggy, full-moon night -- especially if you live near a swamp with spooky looking hollow trees that harbor snakes and other critters that go CHOMP!!!! in the middle of the night.
If you dont see the snake, it could be because it's jumped up and chomped onto your nose and is dangling in front of you. That is one way they can hide from you, especially if it's a copperhead and its venom makes your nose swell up to the size of a watermelon.
But again, you might be just dreaming all this and ten seconds from now you will wake up in the middle of the night in a swamp surrounded by thousands of slithering, slimy, slinky creatures, oozing out of spooky looking hollow trees..