I've seen poop in the dish, and food in the litter box as well. I have one of those double dishes used for cats, and my one girl has turned the empty one into a bed (I've seen her sleeping in it, and she's made a nest of paper towel now). Rats seem to have their own ideas what items should be used for lol. I don't get why they would do that to their food though, they're supposed to be smart and clean animals. :gaah: