Christopher Carraway did a good research on donkeys. I am very against the ballgames and treatment these small animals get.
My first knowledge of their use was in our small coal mines. They pulled small carts of coal and on tracks from the old mines so small that miners crawled on their hand and knees to dig the coal and load it in the carts. The miners pushed their lunch boxes ahead of them, the only lights on their hats. The donkeys had such loving care. I knew a miner, so this is true.
Finally, big mining took over and the animals and miners were pushed out. That's when people found another use for donkeys. Rodeos are just as bad on horses. Our animals deserve better.