Could this be a territorial thing? My daughters rabbit, Bubba is in a cage - but the door is kept open in an open carpeted room. He he doesn't leave the room (bc he doesn't like the wood floor!). His litter box is in his cage. and he was always good about using it. He started pooping and peeing 90% OUTSIDE of his litter box. (but in his cage ) He is not having any mobility issues - so its not painful to jump into it. She has a cat (the he loves) but that has been afraid of HIM , but is slowly warming up. The cat used to entirely avoid the room, but now she explores it a little. Is this a territorial thing he may be doing? Otherwise he is acting normal ?