Warren,

They've got those in Tulum, Yucatan too. Edna and I were standing on the cliff by this temple http://i.pbase.com/u33/eldarrio/upload/35701603.Tulum.jpg watching a storm roll in, when the Iguana's just came scrambling over the edge, scurrying past us...then it started to rain, about four inches in ten minutes. There we were, tucked away in the temple, along with about a dozen of those multi-hued Iguana's...

-S
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If all else fails, punt...