"My Impossible Five would be: Cape mountain leopard, aardvark, pangolin, riverine rabbit and (naturally occurring) white lion. These animals had survived into our modern age largely due to their elusiveness. Their ‘impossibility’ was their tenuous insurance against extinction. They were still wild and free, most of them living outside national parks, still occupying the same territories they had for millennia. As such, they were symbols of wilderness – that wildness once everywhere, and which is now drastically curtailed and shrinking by the day."