We have had quite a few mountain lion sightings in our area.We have a lot of coyotes,bobcats,havalina pigs.and many sorts of snakes.There is so much brush & foliage in the foothills.You have to hope your situational awareness helps you know when they are around,but in reality.They at times can be very close to you & you wont know it.Ive been in my yard & had bobcats cross behind me & not even know it until my wife saw it out the window & told me.Part of living in the high desert.We have a resident king snake that hangs out,so we don't worry about the rattlers.I do find those pesky bark scorpians a pain in the butt