The room is bound by very specific rules that each animal is trying to understand/explore/defeat in their own way (Cat is hot tempered, Owl studious etc).
The very first rule is that the room resets after a certain period, if say Cat scratches the walls, the scratches will disappear after the reset and return to its first state: a room with unbreakable walls, a school desk, a pen, a blank sheet of paper, and all memory of what occured in the previous state is gone.