Mangalitsa (US spelling), Mangalitza (UK spelling) or Mangalica (original Hungarian spelling) is a name for three breeds of pig bred especially in Hungary known also as a curly-hair hog. It belongs to European unimproved lard-type breeds (as well as Iberian Black and Alentejana pigs) that are descended directly from wild boar populations. The Mangalitsa pig is unusual as it grows a hairy 'fleece', akin to that of a sheep. The only other pig breed noted for having a long coat is the now extinct Lincolnshire Curly Coat of England. The Mangalitsa was formerly bred as a lard pig, and animals were large and round. Because of the drop in demand for lard, the breed's popularity has declined and it is now regarded as a "rare breed".
The breed incorporated fat in its organism most efficiently and served as food for dozens of millions of people for a century and a half. Over the past two decades, several leading animal geneticists and nutritionists in Europe (Scottish, Swedish, German) have shown considerable interest to the breed in their research activities. The breed is also appreciated and managed by Austrian, German and Swiss breeders. 
(1) Alderson, R (1994). Rare Breeds. Laurence King Publishing. ISBN 1-85669-052-0.
(2) Mangalica Pig Register 2013 Hungarian National Association of Mangalica Breeders