Researching the subject or the rhino as a self appoited fire marshall I came across this thread...Stonan...you should have included the source of your post:
http://www.sosrhino.org/knowledge/faq.php
its word for word from the answer to their question,
Q: Do rhinos really stomp out fires?
Of course SOS Rhino's piece is almost word for word from Wikipedia,
http://en.wikipedia.org/wiki/Rhinoceros,
see the section on legends.