There are also rhinoceros beetles, a rhinoceros hornbill (bird), and a rhinoceros iguana.  

The plural of rhinoceros is rhinoceroses.  

There are five species of rhinos in the world and rhinos can weigh over 3 tons (US) or tonnes (UK).  Black and white rhinos are both actually grey in color, and males rhinos are called bulls, and the females cows.  Rhino horns are made of keratin, just like our fingernails, and their horns never stop growing.  Rhinos have poor vison and communicate using growls, trumpet calls (honks), snorts, sneezes, and screams, as well as through the smell of their urine and feces.  Rhinos also love mud.