Not sure if this would classify under strange behavior or a _bug_ in the game, but for several hours one day, half of my villagers had no heads! I exited out and reloaded the game at least 10 times to no avail. Just had to wait until their heads came back. My three year old and I both thought it was hysterical. I think I had about 30 villagers at the time and 15 were headless!