I'd say you're more likely to see a nest of geckos than you are to accidentally trip into a raider camp. Most of the raiders have been run out of the Mojave by now... But depending on where you go, you've got cazadores... coyotes, nightstalkers... mole rats... giant mantises... bighorners can be pretty grumpy if you get too close to the herd, too... Oh, and if you hang around Lake Mead too long, then you have to deal with the lakelurks, too.

Most of 'em, they don't tend to bother me too much. But I've seen the kind of damage that nightstalkers can do, it's not pretty.