NEW YORK, UNITED STATES: Vietnamese pot-bellied pigs Oliver (L) and Otis (R) eat a snack of kale as they are introduced, 15 July, 2004, at the Central Park Children’s Zoo in New York. The three-month old pot-bellied pigs were acquired from a farm in New York State. AFP PHOTO/Stan HONDA (Photo credit should read STAN HONDA/AFP/Getty Images)