Cool iguana! I know it probably wasn't possible, but it would have been neat to get him (the iguana) in the shot, too. No doubt it wouldn't have been a tight enough picture for DPC purposes, but a cool picture for the boys. I like the way their heads are tilted towards each other - the front one seems especially engrossed. The sun here is a bit of your enemy, but I figure candids are something over which you don't usually have great control of the light - expressions are more the emphasis.
Super image for the simple fact that it makes me want to know what has captured their attention. A bit blown on (on my monitor) on some of the skin tones but an intriguing shot
Terrible light, avoid midday. Photo is wonky. A square crop can't rescue a composition which is not strong. Not enough of a sense of story... the viewer needs more clues as to what they're staring at. Hands can be one of the strongest and most expressive part of a person. Look at the hands of the kid in red... you've chopped them off!