After several weeks of teasing, FarmVille pigpens have finally arrived. Sooey! The pigpens will hold up to 20 lil' porkers at a time and can be harvested once a day for a bonus.
Farmers can only own one pigpen at a time, and if you don't have one yet -- don't fret. These new buildings are rolling out slowly to everyone. You'll know if the pigpen is available, when you log in to the game and see the following message: