The researchers show that so-called “constructal theory” can explain basic characteristics of locomotion for every creature — how fast they get from one place to another and how rapidly and forcefully they step, flap or paddle in relation to their mass. Constructal theory is a powerful analytical approach to describing movement, or flows, in nature.
Just spotted this article on /. and it tweaked my interest, especially with regards to the notion that general physical characteristics of animal locomtion can be predicted by physics, but it opens up a very interesting thought and revelation:
“Our finding that animal locomotion adheres to constructal theory tells us that — even though you couldn’t predict exactly what animals would look like if you started evolution over on earth, or it happened on another planet — with a given gravity and density of their tissues, the same basic patterns of their design would evolve again,” Marden said.
This notion could just explain why almost every alien species in Star Trek has been humanoid!