The Fat Chocobo can only be summoned by using a Carrot (or some Gysahl Greens in the 3D remakes) in an area that "Smells like Chocobos" inside Chocobo Woods. These areas appear in chocobo towns and also on the Invincible, the final airship. Once summoned, the Fat Chocobo will store items in his belly for the party. In the 3D remake, the Fat Chocobo serves the same function even as the party has a larger item capacity; and he can also be summoned by a man in Southwest Saronia who also keeps track of the game's various logs.