Well, we've seen black snakes go through our carport in FL. Once we saw a crawling thing that was sort of an orangy pink - I couldn't find anything like it in the four snake books I borrowed from the library.
The lady behind us had at least two in her place. That would freak me out!
The worst we've found when we've come back is a couple of dessicated geckos that were maybe 1 to 2 inches long.