User blog comment:SolZen321/Could Godzilla actually exist/@comment-7622429-20140512024531/@comment-5527544-20140514011028

A storage organ makes sense, the whole self generating power thing is kind of stretching it.

The gradual increase in size over generations sounds plausible.

Food and air, I doubt Godzilla in real life would just stop eating, he probably doesn't have to eat as much as before