Chocobo (Final Fantasy XI)

In the online incarnation of Final Fantasy Chocobos are one of the faster forms of alternative transportation.

Chocobo License
To rent a Chocobo from one of the stables around Van'diel the player must obtain a Chocobo License.

Chocobo Stables
Generally speaking, there is one stable in each of the 3 starting cities, three chocobo stables in Jueno, a chocobo stable in Al Zahbi (which may or may not be in business, depending on whether or not the NPC in charge has been taken prisoner during Besieged), and others scattered around telepoints and some of the smaller cities on the planet.

One particular quest, that becomes available to the player once they reach level 20, is to head to Dangruf Wadi and get some greens to feed to chocobos in Jeuno in order to gain the trust and friendship of an abused chocobo.

History
Roughly twenty years before the game's current timeline, the Kingdom of San d'Oria possessed a unique combat class known as Chocobo Knights.

However, in the expansion Wings of the Goddess, the time travel element of the game sends players back to the time period where Chocobo Knights were a known combat class. Though there was evidence (scattered and rarely found or mentioned) that seemed to support the rumor, the class was never announced.

Chocobo Raising
At first, the use of chocobos was limited to traveling from easily accessed hubs to less populated places quickly; however, Square added chocobo raising as a part of the Treasures of Aht Urhgan expansion. Players can raise their own chocobo to have different strengths and weaknesses. The appearance of the bird changes as well, from the feathers on their tails and heads to the color of the chocobos themselves.

Chocobo Racing
Square has also added Chocobo Racing, though it is not player controlled in order to avoid lag issues.