A chuckwalla lizard checking out the people along the trail to the feature called the Fire Wave, at Valley of Fire State Park, in Nevada. The Fire Wave was actually right behind me as I took this lizard's picture. There was a family up the slope looking down on it and they let us know about its presence. It seemed quite content to stay where it was and allow time for us to take plenty of pictures. Chuckwalla lizards store fat on their sides so it makes them look "chubby". Other lizards, like the Gila monster, stores fat in its tail. Chuckwallas also can inflate their bodies with air to wedge themselves into a crack in the rock so that predators can't dislodge them.
The Valley of Fire State Park, in Nevada, is also famous with Star Trek fans. It served as the setting for the planet Veridian III in "Star Trek Generations", the one in which Captain Kirk dies and Captain Picard buries him.
Remember, it's not just a picture, it's a story!