User blog comment:Wrath022/Episode 267: Fairy Tail Zerø: The Adventure Begins, Review/@comment-24039234-20160116112936/@comment-4829046-20160117013732

Except one species appeared to be sentient when questioned, and the rest were avoided due to their threatening appearances :P, so it's hard to say if they ever got into actually eating human meat. I mean, if you think about it, if some could use human speech, that means they learnt it back when the island was populated because I highly doubt they needed to converse with occasional S-class candidates and Zeref. XD

Still, that kind of content wasn't really touched upon even in RAVE. It paints the creatures as man-eaters rather than just aggressive beasts and I think you need to pass certain requirements to establish that or else it is considered brutal for kids. Heck, even the consumption of animals is heavily censored in many cases. It is why they invented those fictional cuts of meat that lack actual biology.