Super shot! Quite majestic and yet sad looking in a way. It is clear and sharp and keeps me looking at it! Hmm, I may have an iguana for my desktop today! (smile)
I like it, interesting profile he has! Especially the many various textures and colors. Very nice colors and light on his eye. And.. the background is complimentary. I wouldn't mind seeing it flipped horizontally and the log cropped some to give all the focus to the iguana.
Yes it is just a iguana, but it is very nice and sharp and a good composer to, well done.Plus I like how you used a dark background it brings the subject forward.