I spotted this group of what I think are mules in a field recently and as I was getting out of the car,the one decided to take a dirt bath,which might be for the flies? This one mule did this three more times but the others lost interest after this initial shot and moved out of the photo. It was funny to see all the maneuvering on his back and the dust cloud it created.
Donald Reese Photography 
You have such great timing. Good shot.
more like good photo luck,at times. thanks
Mules always laugh hardest at their own jokes.
So true
It’s funny how the others mules are looking at it
yes,i agree