Predatory?

That last part made me laugh. XD

Anyway, that is a really interesting question. I hadn't really thought about that. I would think that they would have to feed on more than just radiation to survive, but that's pretty tough because.... what else WOULD they eat?

I suppose I could see the MUTOs eating... people. But not Godzilla. He's never eaten people before, not to my knowledge. So it would be surprising to see him do it here. Also, from what I've heard, humans are kinda like ants to Godzilla. He doesn't really notice them. So eating humans seems kind of out of the question to me.

That said, I have no idea, to be honest. Your guess is as good as mine. Like I said, I would think that they would have to feed on something more, but being that the range of options for them to choose from is pretty limited, maybe radiation is all they need.

True. I could see the MUTOs seeing Godzilla as a food source, being that they feed on his radiation from what I know. Or it's at least the assumption. Interesting if Godzilla actually saw THEM as one. A predatory Godzilla. Hm, interesting.

Actually, yes, now that you mention it, that would be pretty unsettling. XD

Well godzilla was going to kill and eat a monster in a early draft of godzilla vs biollante, that being said in this version he might of ate other monster in the past for their radiation, but now that I think nuclaer weapons take that spot in his diet.

No matter how hard i try, I just can't picture godzilla actually eating something solid. Yet saying that (and I'm no evolutionary expert)why would godzilla need a mouth if he's not going to use it for eating.

That's brilliant actually SOMETHING REAL, it's going to be extremely interesting to see how this unfolds in the film. It would be acceptable to see the muto creatures devour humans "like skittles" haha but somehow I just can't see godzilla doing it.

Too true, all we can do is speculate as of now!

Here I found something on Wikipedia:

In his 2006 re-evaluation, Carpenter examined the paleobiology of giant sauropods, including Amphicoelias, and addresses the question of why this group attained such a huge size. He pointed out that gigantic sizes were reached early in sauropod evolution, with very large sized species present as early as the late Triassic Period, and concluded that whatever evolutionary pressure caused large size was present from the early origins of the group. Carpenter cited several studies of giant mammalian herbivores, such as elephants and rhinoceros, which showed that larger size in plant-eating animals leads to greater efficiency in digesting food. Since larger animals have longer digestive systems, food is kept in digestion for significantly longer periods of time, allowing large animals to survive on lower-quality food sources

Well since according to the background we have on Godzilla so far it's said he comes from a time when the radiation was much higher and it effected a bunch of monsters in his era. So since nuclear reactors that I'm guessing they attack now to feed on radiation didn't exist it makes sense they, at 1 point at least fed off eachother to quench their thurst.

Thus I see it being very likely that if Godzilla and the mutos are from the same time era, they once saw eachother as food sources, maybe more for 1 than the other.

In an early draft of the orignial movie, Godzilla was supposed to make his appearance with a cow in his mouth. In a early draft of Godzilla Vs Biollante, he was supposed to figh a ratmonster, kill it and eat it. Godzilla Jr killed whales in Godzilla vs Destoroyah. Plus in Destroy All Monsters, they said that the monsters can feed as they choose on the island and we see Rodan kill a dolphin. I think it is posable for Godzilla to sustain himself on more than just radiation and I like the idea of it. Makes him more realistic in a way to me. Perhaps he only needs to hunt if there is a lack of radiation.

Would be scary for the MUTO's to eat people -- BUT it shouldn't be shown, it would be scarier if it wasn't (the things that arent seen are always the scariest)

"In an early draft of the orignial movie, Godzilla was supposed to make his appearance with a cow in his mouth. In a early draft of Godzilla Vs Biollante, he was supposed to figh a ratmonster, kill it and eat it. Godzilla Jr killed whales in Godzilla vs Destoroyah. Plus in Destroy All Monsters, they said that the monsters can feed as they choose on the island and we see Rodan kill a dolphin. I think it is posable for Godzilla to sustain himself on more than just radiation and I like the idea of it. Makes him more realistic in a way to me. Perhaps he only needs to hunt if there is a lack of radiation."
-KingKaijuGojira

I second all of this, but I would like to add something: Godzilla lives primarily at the bottom of the ocean where, theoretically, huge animals live. So, I assume that Godzilla likely feeds on mostly marine animals, likely whales, possibly giant or colossal squid.

Any other ideas people?

Oh, and also...

STOMP ON THE RAINBOW!
Taste the rainbow!

I think the Muto do eat humans, because what are they doing attacking the train in the train scene of all the trailers. Were they just curious or were they hungry?