You can narrow down your search by changing the settings in the auction page. Only types of pigs which you have raised and shipped in the past will be displayed in your search result. Raise and ship more types of pigs to increase types of pigs you can get at auctions, too.
Once you've selected the pig you want from the search result, enter a bidding amount. The amount you bid will be deducted from your points in possession as a deposit. If someone makes a higher bid than you, you will receive a notice and the deposit will be returned.
If your bid remains the highest once the bidding period has ended, you will get the piglet. The piglet will be moved automatically to the Pig Pen. If there is no space in the pen, it will be moved to the waiting list and will be moved to the pen when there is space.
*Special pigs from events cannot be put up on auction.