Would a centaur eat meat? Humans do (usually) eat meat, but horses are vegetarians. Would they be omnivores, carnivores, or herbivores?
But of course, they could be either three.
I asked a horse-owning friend, who looked at me oddly (as usual), but told me about a book she read: Deadly Equines, documenting 4,000 years of meat-eating horses on every single continent (including Antarctica). She notes that some of them were in desperation - including human - during things like an expedition, but others are well documented cases of horses that eat meat.
It seemed pre-cooked meat was best and most common, just like it is for us, but not exclusive.
Yes centaurs would be able to eat meat. Their stomachs are a hybrid of a human and a horse, both a gastric and equine colic. The way centaurs are built, it would be impossible to graze upon grass all day. They are typically seen hunting their game with bows and spears. They are very fond of pairing this with Greek wine. It should also be noted that they can eat as many pizzas and hamburgers as they want without any side effects whatsoever.
I assume that centaurs have the best combination of horse and human organs. Someone was saying that they might have horse-sized human organs too but that's a different story. But if this is what we're gonna assume, then I see no reason they couldn't eat meat AND vegetation with "human" stomachs.
I think centaurs would be omnivores. It'd make sense thinking survival-wise. When they obviously need a whole lot of food/water, it'd be a little stupid for them to pick either or. Hunting game like deer could mean a whole lot of meat, but gathering could go with it to fill them up and provide better nutrition.
I guess a centaur could live off of plants alone if he's some Chiron hippie-like centaur and doesn't feel much like hunting.
Biologically, I'm unsure, but from the mythology I doubt they'd have an ethical or moral objection. From what I can tell about the traditional mythology surrounding centaurs, they weren't exactly very, ahem, considerate of their fellow beings, and they were considered amazing hunters.