The major problem is not keeping them warm enough in the winter, but rather keeping them cool enough during the summer months. Heat stress is a major problem and can be fatal. For the individual pet pig that is kept in the house, housing requirements are simple. The pig needs a place to sleep and a place to eat. Pigs are nesting animals and will readily sleep in a dog bed.
Sanitation is accomplished by house-breaking at an early age.
Pigs can be trained to use a litter box successfully or trained to go outdoors. Pigs have extremely well developed senses of smell and are incredibly strong. It is important that all food sources within reach of the pig are extremely well-secured or they will get to them. One of the major problems of miniature pigs is that they love food. Free-choice feeding always results in extreme obesity.