Extraordinary! This donkey was born with a liver that wasn’t working properly. He’s okay now, but he almost died, and the condition left him… well, undersized. Much smaller than a donkey ought to be.
His people took him into the house and nursed him to health. Consequently, the baby donkey was socialized by human beings and their dogs–so he behaves more like a dog than a donkey. Such adaptability hints at high intelligence. Or else he just realized early on that dogs have a lot more fun than donkeys.