I had a bunny one time that was an outdoor bunny, then I moved to my own apt and it had to be an indoor bunny.  My roommate got a cat and the cat literbox trained the bunny!  It was cool!  I'd find my bunny in the bathtub all the time when it was warm he'd get in there and just lay on the cool porcelain!  LOL
 
Vee, that does happen with indoor bunnies... 

  Literbox training is hard but so worth it!