“ I‘m sure it was an aardvark, dad!” whispers my daughter. I remain sceptical, staring down the spotlight beam at empty space. “Let's check,” says Kyle, slipping into reverse and backing up. We wait — me, my wife, our daughter and our guide: four tiny humans beneath a canopy of stars, silently beseeching an invisible animal to re-appear. The hiccupping of zebra carries along the horizon. A nearby fiery-necked nightjar adds its quizzical tremolo. Still we wait. Then comes a nudge from Kyle,
