MAJOR BREAKTHROUGH! Thatch is bad about getting to the food that sticks to the side of his bowl, so I got a fork to push the food into the center of his bowl. When I opened the door the Nosy Annabelle jumped in to check out the cage, then ate his food and now she's sitting in his litter box. Thatch is puttering about in a happy mood, his little tail straight up. I think he's happy.