Fantastic pets Their name comes from their size: At birth, the piglets weigh about 9 oz. and are the size of a teacup. At full growth at the age of 2, they top out at 12 to 16 inches about knee-high and weigh a modest 65 pounds. shit left out blah blah Teacup pigs, which are also called micropigs, are a mixture of those potbellied pigs with the Tamworth, Kune Kune and Gloucester Old Spot breeds. When Croft first saw them, she was so smitten she gave up her day job and started breeding them at her Little Pig Farm in England. Adorable âteacup pigsâ are latest hit with Brits - TODAY Pets & Animals da man has been nagging me to start my own business and a few thousand to start a new business isnt bad....i have my idea....i can raise little piggies...all i need is a little barn and little stalls....he is gonna love this idea.