Could science fiction alien Balok exist?

Welcome! "Alien Life" tracks the latest discoveries and thoughts in the various elements of the famous Drake Equation. Here's today's news:
g Abodes - A new study shows that activity beneath the Earth's surface could have been responsible for ancient sea level rise and global warming at the Earth's surface. See article.
g Life - A new University of Florida study of nearly 5,000 Haiti bird fossils shows contrary to a commonly held theory, human arrival 6,000 years ago didn't cause the island's birds to die simultaneously. See article.
g Imagining - A short entry on the early “Star Trek” alien Balok: Creatively speaking, this alien was a disappointment compared to the previously presented Alfa 117 canine and salt vampire. Balok only possesses two real visual differences from humans: He’s shorter and possesses more child-like features (teeth and facial). As to the first trait, of height, Balok may come from a planet with heavier gravity than Earth. Or perhaps there was shorter grass on the savanna (his hominid frame indicates a primate-styled path to intelligence), so height actually may be an evolutionary disadvantage on his world. Possibly his planet is slightly cooler, as that would encourage stockier traits, though the shapes of his nostrils don’t indicate his kind regularly breathes cold air, nor does the Enterprise crew note or physically show that they’re on a cold ship. As to the second trait, of child-like features, presumably it holds some evolutionary advantage (after all, adults even in smaller mammals appear much more angular in their faces than their infants), though not enough hints were provided to offer speculation. Any ideas out there?

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