The colour of a rhino depends on its species; in fact, at first glance, it seems that the names of the species of rhinoceros are based on their colour: there are white rhinos and black rhinos. But here not everything is so obvious and unambiguous, the fact is that both white and black rhinos are grey-brown. However, due to the fact that these rhinos like to wallow in differently-coloured dirt, they were named accordingly.
Here you can see how one cute little rhino loves to be brushed.