Many animals have coloring that seems to serve no purpose. What we often find, however, is that science just hasn’t figured out what the purpose is. For example, some have theorized that these colorful patches on Shriekers might have more blood near the skin surface in order to emit more heat than the rest of the body, and that might communicate something to another Shrieker like, “Stay away from my food,” or “Look out, I’m about to throw up a new baby.” Unfortunately, Shriekers are hard to study because they are the shortest-lived of the three Graboid life forms. Some years ago, the few that the government had in captivity escaped in Perfection Valley and multiplied, much to the consternation of the locals, who barely managed to destroy them.
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