Pigs can be kept outdoors or in confinement. In confinement they often have a pen or stall all to themselves where they eat, drink and sleep. Boars are often in a separate pen to the sows and gilts...
Yes. They get many illnesses that are common to humans also. They are vaccinated at an early age (between 4 - 6 weeks). However, some things do not have a vaccine. There is a respiratory ailment...