* This can be very difficult for several people and can result in a undesirable litter. A sow shouldn't be bred unless they are over 3 months old so its very important to make sure you have the correct sex right when they are born. Even pet stores have an extremely difficult time sexing which results in pregnant sows sold to unexperienced pet homes, which is why I strongly recommend not getting pigs from Pet Stores. Below I have placed two photos showing a sow and a boar at only 10 days old.
SOW: the Y identifies a girl
BOAR: The lower case i identifies a boy or in my opinion a line under a circle that sort of looks like an extremely small dart board or end of a hot dog :)