I was watching a Lightning Returns demo and I couldn't help but notice the Chocobo Eater.
The first time I ever saw one was in FFX, and I was somewhat surprised one showed up, for I had never really given any thought to a Chocobo's place in the Final Fantasy ecosystem.
But, now I do, and I have to ask if it has been made clear if a chocobo has natural predators in FFXIV.