<em>And why should we leave? Hunting is good, here. Nothing hunts us, and little threatens us. Our creators are gone, so we will be no more. Why would we go to a place more dangerous? We would be killed.</em>He'll note that, despite their concerns, the creatures are highly capable of breeding, amongst themselves, and, aside from the extra tails, hive-mind intellect, and telepathy, few other real enhancements were made, except to make them hardier and more agile.