Board Thread:New on Galactic Crucibles/@comment-5135903-20141008164704/@comment-5870856-20141115192015

Odds are a lot of them will have brains in some form, or at least some kind of central processing centre which controls the rest. Of course, there are creatures on Earth which lack brains, so it may not be a given, but I imagine it'll be a fairly common trait.

I'm also guessing the predator-prey relationship will remain pretty much a constant in the universe. It's a damn good system which helps drive evolution and distribute energy evenly. That being said, it would be a lot of fun to try creating a world without predators and prey.

What other Earthly biological traits do you think will be relatively constant in the universe?