According to this article for the first time there is documented case of a Leopard hunting down a crocodile.

While it doesn't seem to be that big of a crocodile nonetheless it seems like a feat for the leopard (I certainly wouldn't mess with either one of them :-)).

But the comment that caught my attention was:

"It just doesn't make sense. The meat you get out of a crocodile is just not worth the risk it takes a predator to acquire."

I have no idea why the Leopard did or what his motivations were.  But I drew an immediate parallel to a lot of things that happen in IT. A high risk move for a ridiculous amount of meat. :-)