Maybe they are hive-minded cosmic shrimps, and their queen died en route, so they arrive headless, with an unsatiable craving for cat-food. https://en.wikipedi

Maybe they are hive-minded cosmic shrimps, and their queen died en route, so they arrive headless, with an unsatiable craving for cat-food. https://en.wikipedia.org/wiki/District_9 https://en.wikipedia.org/wiki/District_9