There are several different names floating around for these piggies; Pixies, Wees, Pocket Pigs, Dandies... No matter what a particular breeder decides to call their piggies, you need to know what size class they are in.
We specialize in the micro & teacup size classes & this is how we scale our piggies:
(These are sizes and not considered breeds) For more information on our most popular breeds, check out "Juliani vs Mini Pig".
Micros are the smallest you can get. They range in weight from 25-35lbs as an 18 month old adult and are 12" or under at the shoulder. (Super micros will be on the smaller end of this scale. Usually always under 25lbs and around 10-11" tall at the shoulder).
Tea cups are the next size up and range in weight from 35-55lbs as an 18 month old adult and are 12.5-15" at the shoulder.
Miniatures are between 65-85lbs as an 18 month old adult and are 15.5-18" tall at the shoulder.
Regulars (most of these are pot bellies or pot belly crosses) are over 85lbs as an 18 month old adult and are over 18" tall.
There are several different breeds of micro, teacup & miniature pigs. Some breeders are crossing the breeds & forming their own breed of pig. Ask what percentage their piglets are and of what breed... They should know... Afterall, they are the ones breeding them :).
Miniature pigs are considered livestock and should be treated as such.