[quote=ASTA]
Well, you'll also get nailed by the fact that a creature's bone density increases as its weight increases, since it needs a frame to support that weight. Square-cube law and all that jazz. Seeing as how no one in their right mind really feels like looking up all of those articles and doing that much math, random numbers are the way to go. :3
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Well since we are talking about fictitious animals that as far as we can tell have no analogous beast in our historical records why not just make it as you envision it?

Oh and Rill, I answered you question...I think the answers might surprise you.