Luckily, there is only one venomous snake species in Oregon. The Western Rattlesnake, like most rattlesnakes, isn't aggressive to humans. Rarely found in town, most Oregonians have never seen one. Also, like most rattlesnakes, if you respect its personal space, odds of you being bitten are near zero. If you mess with it, well, a snake's gotta do what a snake's gotta do. Leave them alone and they're usually pretty easy to avoid. Fatal encounters usually involve an automobile, much to the snake's detriment.