These animals stayed on the terrace for about an hour, as we oohed and aahed.
We later heard the back story from Marlice. Both the donkey and the zebra had been brought to N/a'ankuse after being orphaned. After being looked after they were released into the wild, but remain totally tame with humans, and best friends with each other. Another benefit of being out in this house about 7 minutes from the lodge, as they never visit the main lodge or villa area. The duiker who visited us the previous day had a similar story. It's an odd combination of wild animals - they're out on their own fending for themselves on the veldt - and tame - they were raised by humans and totally comfortable with them.