Pig Houses are natural and craftable structures where Pigs spawn and live. A Pig is spawned once a Pig House is constructed and respawns after 4 days if killed. Pig Houses are naturally occurring in Pig Villages, with the possibility of the village containing the Pig King. Occasionally, an individual Pig House can be found in the wilderness.

At dusk and night, Pig Houses with Pigs in them will have a light on. However, as soon as the player approaches the house, the light is switched off. The Pig will relight the light only when the player moves away.