A very interesting idea. I like the puzzle aspect of trying to get the monsters into different moods. It does get a bit tedious with time, though...it's possible it would be better to tell the player explicitly what conditions unlock new entries, since it turned out to be a lot to hold in my head at once.
I kind of like the idle aspect, although it seems a bit disconnected from the puzzle aspect and effectively ends about halfway through. There's definitely some compelling ideas here, though, and I appreciate the unique mechanics of the game.