Rhinos don't tend to be the first animal you think of when you talk about visiting a zoo - I always find lions, tigers, polar bears and elephants are higher up the list - but it turns out that the rhinoceros is a desirable animal..Desirable, that is, for its horns.
But what's unbelievable, is that criminals are so desperate to get their hands on these horns, they're willing to break into a zoo and saw them off the animals during the night.