They usually have good dispositions and are seldom aggressive towards humans with the exception of mating boars. They root and squeal. If pigs are kept in a clean environment, odor is not a problem except for uncastrated males who develop a strong scent at 3-5 months of age. The major differences are that they don't sweat or pant to cool themselves. 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.