So far, so good, it looks wonderful. It's turn 92, playing Sumeria with Gilgamesh. My capital and my units have been attacked by four Wild Animal units: two hippos, one wolf and one jackal. One of the hippos killed a lonely scout (fully understandable) and the other fell under the stones of one of my slingers; the jackal and the wolf fought bravely against one of my warriors, and they died. The wolf spawned in plain view, something which looked a bit strange. Are you using invisible lairs, similar to Barbarian outposts? I haven't found any other strange behaviour or any errors so far.