Rat Tail

The Rat Tail is a recurring item in the ''Final Fantasy series.

Final Fantasy IV
The Rat Tail can be found in the Land of Summons and if given to a collector of tails inside the Mythril Cave, the player will get Adamantite in exchange for it, which in turn can be given to Kokkol, the dwarven smith, to forge the sword Excalibur.

Final Fantasy XII
The Rat Tail is a loot item dropped by Dire Rats and Lab Rats.