The Minister approaches the King to tell him that his only daughter, the Princess, wants a new pet. But the King says she already has too many, and she can't take care of so many animals. Thus the Minister proposes a contest of skill and daring to select the Royal Zookeeper. Master Piggy then sends his pupil, Polly, to participate in the contest.
Baku Baku Animal is a variation on the Tetris-type game. The game has three different play modes: practice, normal, and hard. It can also be played by two players against each other (except for the Sega Saturn version).
The objective is to pair animal heads with their respective food. If an animal head comes falling, you must make it fall on a pile of carrot tiles, dog heads with bones, panda heads with bamboos, and monkey heads with bananas. There is a bonus item, the "BB coin", which will appear from time to time, and remove piled tiles from the playfield. Removed tiles will be sent to the opponent's playfield all at once, increasing the difficulty of the task. Polly will face several contestants, and she'll win when her opponents get their playfield piled up.