Rhino

In Africa there are 2 species of rhino. The white and black rhino. The names have absolutely nothing to do with their color. 

The names are derived from the shape of the lips. The white people in South Africa call the white rhino the "wijd iip renoster", the english changed that into white rhino. So the other rhino got the name: black rhino. Better names for these rhino are: square lip rhino (white) and point lip rhino (black). It does them more just, the names also indicates that one is a grazer and the other one is more a browser.