In Star Trek Enterprise a body from the future had DNA fragments from something like a dozen different &quot;species&quot;. Vulcans, Klingon, and Human were all included.<p>The thing about life boundries though in biology is that the more you know the less it makes sense. All bacteria are technically a single species, as are Archaea. Virus&#x27;s aren&#x27;t considered alive at all, though they do evolve. Then there are asexual creatures entirely. I vaguely recall a lizard that has no real genetic diversity because they are all females that reproduce without any sex, and there are no males. So... they&#x27;re not a species either, but are still reproducing. Biology is screwy.