Rhinoceros

, or rhinos, were Earth rhinocerotids K9 once encountered on an unnamed planet in another dimension, partially inhabited by ex-Tellac miners.

They lived alongside other Earth animals from widely varying periods of evolutionary history. (AK9: K9 and the Missing Planet) The Judoon bore a distinctive similarity to rhinos, leading Martha Jones to call them "space-rhinos". (DW: Smith and Jones)