As a kid we called these guys “horny toads”. They look like something that should be roaming with the Dinosaurs! This Flat-tail Horned Lizard was in Coyote Canyon in Anza-Borrego Desert State Park, California.
This was captured with a Canon 5D III, 70-200 f/2.8 lens with a 2x converter at ISO 200, f/5.6 and 2,000 of a second shutter speed.
I spotted him on my way to a mountain bike ride. Fortunately it rain across the trail or I don’t think I would have ever spotted it. Look at how well it blends into the desert.