This image is bouncing around the internet, and I can’t find any information on its origin, but it looks like an anole to me. Valiant last ditch effort, but I think we all know the outcome.
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anoleannals.wordpress.com 
Being the web nerd, I did some digging:
oldest occurrence on the web:
Credit goes to Sarah K. Andrew, http://www.flickr.com/people/rockandracehorses/
showed up on SoN a little later:
http://www.shoppedornot.com/?p=752
Pulled it into Photoshop myself to inspect it, and as best as I can tell it is legitimate. There are no signs of digital tampering.