Somehow not yet part of my experience. I’ve only seen harmless things like tarantulas (at Okie Tex!), occasional false widows, there was a run-of-the-mill scorpion that jumped out of my car once when id parked it at Lowrey’s place.
I guess there was this one time when Andy was putting away my truss poles at his parents’ place and noped out of a spot because there was a black spider — I was like “come on, a spider”, but a quick inspection of said spider showed a clear red hourglass mark. Okay, thank you for not putting my truss poles there.
No mountain lions or rattlers as yet. They’ve probably seen / sensed me, though.