Originally Posted by
Eligor
Cannibalism. When there's nothing else to feed on the Swarm begins to feed on itself, much like the body of a person who's been deprived of food for too long. Which begs the question though, was there any evidence that the Zerg completely destroy all the species that they assimilate, or only those they perceive as a threat to their superiority? Are there still original Dune Runners and Slothien running around? Are the Zerg capable of existing in an ecosystem or do they completely destroy each and every one?