No joke.  I got a bunch of cels in and had them 
(unwisely) spread out on the floor for sorting.  
The dog runs in, hasn't seen me in a while, and 
runs right in to the middle of the cels.  I lucked 
out since he didn't step on any and damage them, 
but he gave a quick spritz of "you're the boss and 
I'm SOOO happy to see you" pee that spattered a 
couple of cels.   >_<

*That* was disgusting to clean up.

I joked about selling those cels right away, but 
my conscience has kept them in my collection ever 
since.  :-(