Rattlesnakes? Yep! I don' tsee them often, but I know they are around. One day I came back from walking the dog and there was one about four feet long wandering across the walk to the front door. Waited a bit for him to move on! The birds were all calling to each other about it!
Black widows! Yep! There was one living in the garage for a long time, I don't know if it is still there or not!
Tarantulas? Yep! Especially in the monsoon season, they'll come in the garage where it's dry. I nearly jumped out of my skin once! They are HUGE! Last year I drove down to a golf course in the mountains near Mexico. I think it had rained the night before, there were a bazillion tarantulas crossing the road!