Around June, 2007, there was a post that showed how to collapse a Rhino CP. It was different than this one. With the instructions, the collapse was fairly simple, and it was left to the folder to complete the horns.
I don't recall the model or help, but I seem to remember that the helper said that he didn't like the model, but promised to show the steps for a friend, so he posted it for the rest of us.
I folded one, now I want to see if I can teach it to some high school kids.
PLs point me at that post, and pls tell me how you used the search function to locate the specifics. (I found the general rhinoceros posts...)
Thanx,
- Hank Simon
PS: EDIT - I found the reference on the O-list, Nov. 10, 2007
On p. 94 - 95 of Origami Omnibus, by Kasahara is a rhino CP.
Jorge E Jaramillo generated this video of how to collapse the rhino CP:
http://www.youtube.com/watch?v=4r0txuo-14A