Handheld Chocobo Breeding

[Mijin]

Back in the day Final Fantasy VIII had something like this, I don't remember all the details because it was a long time ago, but I'm pretty sure I remember them releasing a tamagotchi type thing to go along with FFVIII that could plug into the ps memory card slot and you could do something or another with it.

Edit: I looked it up because I couldn't remember all the details: http://finalfantasy.wikia.com/wiki/Chocobo_World