At the turn of the 19th century, about 1,000,000 rhinos lived on the planet. By 1970, there were only 70,000 of these magnificent creatures left. Currently, only 28,000 rhinos live in the wild, while three of the five rhino species are critically endangered. The southern white rhinoceros is classified by the World Conservation Union as a “nearly threatened” category, and the larger unicorn rhinoce...