All potbellied pigs Sus scrofa are miniature in relationship to their cousins, the farm hog. Farm hogs can grow up to 900 pounds or more.
A typical, full grown, potbellied pig can be anywhere from 100 to 250 pounds. As with people, the size varies, but the average size is somewhere between 100 and 150 pounds, being less than 20 inches high at the shoulder.
Pigs grow quickly until they are about one year old, them continue to grow slowly until they are between three and four years old.