The cage: on closer examination, there are two eyebolts screwed into the floor quite solidly. A padlock on each attaches to the cage, holding it in place and at the same time making it clear that it could be moved - odd, since it seems to be wider than the door.

The dishes: when the milk in the first dish is drunk down, a tiny spout is visible near the bottom of the dish. When the milk is completely gone, or at least nearly so, an equally tiny hole with a fine mesh over it can be seen... after the first time you fall asleep with milk in the bowl and find it refilled with water, then later with milk, the purpose of both become obvious.

The communication area: the microphone is, apparently, quite a good one - you can be clearly heard from anywhere in the room, even when speaking quietly.

*purrs softly* I think it's quite a good room, actually. Certainly it's the right size and has most of the necessary things... although there is one thing you left out and after spending quite a few hours in there I'm quite sure that you will be either begging and pleading, or trying desperately to come up with some other solution; toilets, litter boxes, or something of the sort really shouldn't be taken for granted.

Good boy.