Hello, my name is Jill Phillips, and I'm co-owner of Squeals on Wheels, a traveling petting zoo and pony rides. My name is John Phillips. We have horses, miniature horses. We have miniature llamas and alpacas, chickens, ducks. We have bearded dragons. Our website is www.squealsonwheels.us.
I would say that the average-size miniature pig is under 30 pounds. Some, obviously, get much larger and some may end up smaller, maybe even under 20 pounds because there has been a lot of selective breeding with the different breeds of miniature pigs. You really have to do your research and go to a reputable pig breeder if you've decided to go to a breeder or any of the miniature pig sanctuaries or rescues.
It's always best to see the parents of the little miniature pig, or at least have a picture of the sow and boar, the piggy's parents, so that you can see exactly how tall they're going to be. Most of the little miniature pigs might to 10 inches tall at the shoulders, or the withers; some, up to 14. So there's no standardized term to define the size of miniature pigs, so you really have to do your homework if you're looking for a very small pig.