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1

Trying to think of a novel way to reach the conclusion without invoking the 80 hamburger answer, it occurred to me that if this is an engineered being, then perhaps we don't need to stop with normal biology. Invoking regular photosynthesis is a non starter, since the creature would not have sufficient surface area, but this really only applies to natural ...


2

I agree with David Hambling's assessment that an animal that size would only need 100 human rations. I also agree with Mary that you want an easily managed, energy dense, and nutrient rich food source so that you do not spend too much time feeding it. But a third and possibly most important factor will of course be cost. If your kaijen needs a high protein ...


2

Your kaiju is just a dinosaur, what did giant dinosaurs eat? Normal food. But your best guess is to make it vegetarian since the biggest land carnivore ever existed was Gigantosaurus and it was incredibly small when compared to giant herbivorous dinosaurs. And you can see it happen to this day too, elephants and giraffes against lions or bisons and elk ...


5

Aluminum. Refined aluminum metal is extremely energy dense, as is evidenced by the violence of a thermite reaction. Aluminum metal has much to recommend it as a fuel. 1: It is stable, and will not explode or rapidly degrade if unused. 2: It is easy to contain and transport and is nontoxic. 3: The infrastructure for refining aluminum exists. 4: It ...


3

Why would it need a special diet? If this thing is roughly 1000 human body-masses and it would require something like rations for about 100 humans (calorie intake does up via 2/3 power of mass IIRC).


5

Fissile Uranium The outrageous displays of power and other feats that are the reason you want to keep a kaiju around in the first place? They all require vast quantities of energy. Probably more than can easily be obtained chemically. If you don't want your kaiju to spend 98 percent of its time eating and the remaining two percent kicking ass, he ...


2

There are three major considerations with feeding him. One is that you don't want him spend most of his time feeding, like a cow grazing most of the day, when you have him in the field -- and it might prove boring in his downtime. The second is that you want the food to be concentrated and so easily to cart -- both into the base, and if you field him. ...


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