Diagnose a pig that stopped finding truffles
Start at the barn door on a dry, non-winter morning. Check age, food and outdoor access before rebuilding a fence or changing the entire pasture.
Check the animal and the weather
A pig that has eaten every day matures after ten nights. Feeding a pig bought yesterday cannot make it dig today. An adult also needs to have been fed and to be able to go outdoors. In winter or on rainy days pigs stay inside and will not find truffles. Check the animal status and wait for a suitable day before using a cold or rainy test as evidence that its pen is broken.
Watch the doorway, then inspect the yard
Open the barn’s animal door and check that the pig can actually leave it and walk. A closed gate farther out is fine if there is usable ground inside the pen. Clear a small test patch of weeds, rocks and loose items. Crafted paths themselves do not rule out a truffle in modern versions. If every animal is motionless at the doorway, observe the exit before blaming friendship; a very low-friendship adult can still dig its first truffle.
Search where the truffle lands
Walk the pen later in the day and look just outside fence lines as well as directly beside the barn. A truffle may be pushed farther along if the tile ahead is occupied. It is a ground pickup, so checking the barn Auto-Grabber does not establish that none were produced. You can go mining while the pig is out; you do not have to watch every dig. Pick up any remaining truffles before the season changes.