User blog comment:Lord Loss/Monster Hunter Theory... Blog/@comment-4003956-20120423163831/@comment-4003956-20120423210511

Also, what Dippamus said.

That is the main reason that the low gravity theory rubbed me the wrong way.

Low gravity is plausable if the creatures all came from a planet that has high gravity and then moved to a low grav one. Otherwise the fact that they grew up in low grav would be reflected in their muscles, bones, and blood.