The hairy pig is called curly pig. Curly pig is a kind of pig from Hungary, which is a cross between European wild boar and Serbian local pig, and is very suitable for raising in Scotland. Pigs are vertebrates, mammals, domestic animals and ancient omnivorous mammals, which are mainly divided into domestic pigs and wild boars. Pigs have different physical characteristics according to different breeds. Usually manifested as big ears, long head, short limbs, straight nose, fat body and narrow waist and back. The color of fur is usually white, pink, black, brown and design. Domestic pig is a subspecies of wild boar domesticated by human beings. Its tusks are shorter than those of wild boar, and it is one of domestic animals domesticated by human beings.