large sagging belly, which in pregnant sows may drag on the ground. The head is small, with an up-turned snout, small ears and eyes, and heavy sagging jowls. The I is robust and has good resistance to disease and to parasites. It is usually raised extensively, and forages well on the rice straw and water plants of its native area. It is particularly well adapted to the marshy and muddy terrain on which it usually lives: it has plantigrade feet, with weight borne on all four toes of each foot. Two principal types are recognised within the breed: the I-mo or Fatty I is the typical small short-legged pig, with small upward-pointing ears and a short snout; the I-pha or Large I is taller, has longer legs and a longer snout, with bigger ears held horizontally. Notes References Further reading Nguyen, Thuy Thi Dieu (2004). Genetic diversity and distances of Vietnamese and European pig breeds analysed with microsatellite loci. Aachen: Shaker Verlag. Dissertation. Mammals as pets Pig breeds Pig breeds originating in Vietnam