User blog comment:Awesomesix/ERB Contestants Battle to the Death/@comment-26209006-20150305050053/@comment-26209006-20150305051815

That's a good point, but who says they aren't vampire bats?

They could just be random bats of different variants. It never says what bats, but in the end, they're still bats, and bats are Carnivores.