If I were a crazy rich person–as opposed to a crazy not-rich person–I would buy myself a copy of The Rhinoceros: A Monograph (observed at the Natural History Museum, Washington D.C.):
To give you some idea of the size of the book:
Best I’ve been able to find, a used copy goes for the low, low price of $1,250.
That’s a lot of rhino . . .
I would expect at least some decent compositions for that kind of money. No chopped-off ears, horns and such.