“In stark contrast to its northern relative, the recovery of the southern white rhino sub-species is one of the world's greatest conservation success stories, according to conservation group WWF. In the late 1800s it was considered extinct, but a small population of perhaps 50 animals was rediscovered in Natal, South Africa. The subsequent creation of protected areas and breeding rhinos on private ranches has been a spectacular success. Though poaching is still a problem, the population has swelled to 11,000 and growing, making this the most numerous of all rhino sub-species. The success can partly be attributed to allowing rhinos to be bought and sold for tourism and sport hunting. "Giving them an economic value caused them to bounce back like crazy," says Robinson at the WCS.”