A question about the placement of the pig. The rules state that pigs are "treated similarly to normal followers." Does this mean that if one pig is placed on a farm that another pig cannot be? (This would be similar to the huts in H&G.)
You can play a pig whenever you put down a tile which is connected to a field where you already have a farmer placed. Note, that the pig does not count as a follower when counting ownership of the cities.