Those guys are cool! I used to have a giant vinegaroon for a pet that a friend from AZ sent me in the mail. He has them wild in his yard. The bad part was that my wife opened the package - LOL!
Here's what a vinegaroon looks like:
http://www.petbugs.com/caresheets/ga...-giganteus.jpg
They have a unique defense system where they emit an acid at the base of their tail that smells like vinegar and they wave their tail spraying it all over. It burns pretty bad if it gets in your eyes and it turns your skin red if you have sensitive skin.
It died about a year ago and my wife still celebrates the day.