Lizard Found in Mars Curiosity Photo SOL 597

Mars Lizard

I was looking at the most recent Mars Curiosity Photos and came across this interesting find.  Here is what appears to be a lizard on Mars.  This lizard clearly has one leg up.  Whether this lizard is a fossil or an actual living creature remains to be seen.  You can find the original photo here http://mars.jpl.nasa.gov/msl/multimedia/raw/?rawid=0597ML0025200080301206E01_DXXX&s=597