spe·cies / n. (pl. same) 1. Class of things having certain common characteristics. 2. Group of animals or plants within a genus. 3. Kind; sort. [L: appearance, rel. to specere, look]
The FF world is so vast that the gurus at Squaresoft have come up with a plethora of their own unique species! Some of them are widely known, others not so well. Typically, these are all the creatures that are not monsters. Usually, they exhibit some sort of sentience or intelligence, like moogles, and some are resource animals, like Chocobos.