Suggesting this again:
Giant mansion whodunnit mystery! Like in the style of the board game Clue. There could even be pets themed from other board games as suspects/helpers, like candy land, monopoly, checkers, chess, etc etc.
Or same premise but fairytale themed. Same mystery/whodunnit, but starring classic/modern takes on fairytale characters. Beauty and the Beast, Rapunzel, Jack n the Beanstalk, etc. (Yes I am aware some pets with this theme exist already, but there can always be more interpretations that haven't been done yet, even if only changing species.)