Yes nature is full of these hidden wonders. Some of my best pictures were taken with a macro lens on my old fully manual Canon F1 in a deserted lot full of weeds and trash. Taking a picture of a flower can turn into a picture of bee, butterfly or even humingbird! There are ALWAYS things to see in a photo that are hardly seen with our eyes. Its all about perspective! You see things in a NEW way!
About the "hidden snake": The very small portion that is seen is very un-snakelike. Snakes do not have eyelids. The eyes are fixed in the sockets. In what I see, the ridge over the eye and the light area around the eye seems to point towards eyelids and eyes that are directional. If you look at the zoom of the hole while blocking out (piece of paper with a straight edge) the blurry object just to the right. If you block only along the line of this blurry thing you will see what looks to me to be the top of a lizards head cocked to the left (as lizards do) to get a good look at camera with its right eye. You can see the top of the head and the forward part of the 'brow' of the left eye. I would guess it could be one of the "spiny" lizards ie. fence lizard, swift, etc. It appears to have a somewhat rounded head but we do not see the snout. If it is longer then it could be a mature male skink. Both of these genus Sceloporus and Eumeces have species in Texas.
Anyway its all a guess...sure a lot of fun trying to figure out!