I’ve posted this behavior before, and am posting it again just to let everyone know how common it is. I’ve seen it often, I saw it again today.
The coyote must have smelled the dead, dry snake from the path. The first photo shows the coyote sniffing. It went over to the edge of the path, where after a little bit of nose-work to move leaves and debris, it picked up the very stiff and dry dead snake. This snake was carried to the other side of the path where there were fewer twigs on the ground. It was dropped as the coyote grimaced disgustedly at the smell. It was carried a little further and then rolled on. The coyote then got up, making sure the snake was placed correctly — however that was — with its nose. And then the coyote rolled again on the snake, over and over. When the “rubdown” was finished, the snake was left there, and the coyote trotted off.