I have one of these critters and I think the opposite is occuring -— he is domesticating me.
When he brays very loudly I bring him food.
One was on the run with orders to shoot to kill (traffic hazard) when he took the RIGHT turn and came up my mom's driveway. My sister brushed the mites out of his ears and he was fed and tended to and put with a horse who he made friends with. He only ‘He'd’ usually (He....He....He...), but when he saw my sister he gave an entire “He-Haw...He-Haw..”
Domestication is funny that way. I am sure the many changes between the donkey and the wild ass are not only for carrying heavy loads or no longer needing to be fleet of foot. I think the squeaky wheel got the grease, as it were; and the ‘braying of an ass’ is still a pejorative because it is so objectionable.....will someone please feed that donkey?