The average size of a healthy mini pig is 100-150 pounds, think of a black lab dog with short legs. Remember that 'mini' refers to the size difference between a farm hog and a potbelly.
Breeders will advertise them as 'teacups', 'mini's', 'micro mini's', etc and they stay under 50 pounds. NOT TRUE
read the articles and stories on www.wipotbelliedpigassoc.org for the truth and sanctuaries and adoption centers around the US and Canada