You would love the black racers we have around here. My wife wants to kill them, but I told her no, they help with the rodent control. Have also had a hog snake up in the rafters of our shed, that was interesting. It was after some birds that nested in the soffiting. We didn’t hear anymore “cheep cheeping” much longer after that…
Have also seen king snakes, and I haven’t seen any poisonous ones around, but my wife saw our dog barking at a rattler down in the front yard once. She ran up the hill to get the shotgun, but by then the dog was on our porch, so I guess it got away. She suspects it was a timber rattlesnake, yikes…
Check out this thread: