[Dangerious P. Cats]

Myself and some fellows want to build a sci fi setting that encompasses most of the tropes and clichés of your typical space type sci fi (things like Star Trek, Mass Effect, Babylon 5, etc). We're trying to work out what your typical races (outside of humans) for a such a thing are and I was hoping that the wisdom of the forum's hive-mind might be able to shed light on such matters.