Since this thread's just an intermission, I'd like to relate a cute story about rhinoceros when I worked for the Milwaukee County Zoo.
We had a skeleton of a white rhino lying out in the open as a sort of "extinction exhibit". Actually we just couldn't get another white rhino to replace the old one, and co-opted the old one's corpse just so there'd be *something* in the pen.
But anyway, one day our education coordinator gets this phone call from a local woman. She's interested in our rhino skeleton, and would like to know "how much we want for it". When told it wasn't for sale, she made an offer of $10,000. When told it was illegal to possess without a permit, she remarked that she wouldn't have the *skeleton* long, as she was planning on grinding the whole thing into powdered form.
When told it didn't matter, she couldn't purchase it, the woman asked if she could have the horns only. When this too was refused, the woman became irate. She said something along the lines of how maddening it was for her to see such a valuable thing sitting out in the open like that, rotting away. Then she hung up.
For the next two weeks, I took every one of my student groups through that exhibit, in the hopes of spotting some obsessed horn-grinding lady leaning over the railing.