I
It depends. Sence pigs don't really have much hair/fur they need warmth. But not to hot. If it's really cold out then you need to have something that the pig can use to stay warm.
Sheeps, horses, cows, pigs, chickens, roosters, turkeys and more.
Barn or sty.
no not in a barn. only in the wild .
on hay in a barn
Sure bro
Great horned owls, barred owls, and even hawks will become a predator for the barn owl. Because barn owls stay along side underpasses, cars are natural killers also.
like a barn with mud
Barn animals such as horses, pigs, etc.
In His Swine Cellar
Because of Gravity the barn stays on the ground
Shelter from wind and snow, some heat trapped from warmest part of day, soft bedding possible.