Yes its physics, there is a reason why Dinosaurs did not grow bigger. With bigger size the leverage effect becomes too strong. Bones would start to weight more as they could support over a more or less fixed size.
There are many reasons i don’t know to be honest, but one more thing i can offer is why spider can not grow bigger as they are. Spider have no Loungs, they use capillary action to breathe, if you raise the size of Capillars they cant work anymore.
in the other direction, there can be no mice that is smart as a human because the brain is too small, you cant make so small (biological) brains with the abilities of a human brain.
I hope that helps even if its not a direct answer to your question
Latest Answers