English: Mother and young rhinoceros killed for their horns. At the beginning of the 20th century there were 500,000 rhinos; in 1970 there were 70,000; today, there are fewer than 29,000 rhinos surviving in the wild. Between 1970 and 1992, large-scale poaching caused a dramatic 96% collapse in numbers of the Critically Endangered black rhino. 95% of all the rhinos in the world have now been killed. Taken at private game farm in Gauteng, South Africa.