The diversity of game here in the Southern Kalahari is extraordinary. Today a group of guests and I took the time to observe a herd of Tsessebe antelope, about 15 females and calves in total. Tsessebe may not be as immediaely glamorous as sable antelope with their dramatic colouring, or as engaging as roan with their absurd, donkey-like ears, but they have their own fascination. Their horns curve gently into the shape of a classical lyre; their coat has a rusty, red colour which seems appropriate here in the desert. But the dominant features of the Tsessebe, their sloping backs and powerful quarters, suggest speed. Claims are made for this to be the fastest antelope in the world (though most give the American pronghorn the nod) at over 70 km/h when frightened. And that’s what we saw today as suddenly the herd sensed danger and vanished across the savannahs in just a few seconds.