2. Strangely, both the black rhino and the white rhino are actually gray, and the main difference between them is their lips. Black rhinos have pointed upper lips so they can eat bushes and small branches. Browse is a word sometimes used to describe twigs and branches, so a black rhino is called a browser. White rhinos, meanwhile, have square lips because they prefer to eat grass, and that's why they're grazers.
3. In 1970, there were approximately 65,000 black rhinos in Africa. By 1993, that number had crashed to 2,300 living in the wild. Because of anti-poaching efforts, the number has climbed back to a little over 4,800 today.