Pigs are any animal in the genus Sus. The most common species is the domestic pig, which is given the scientific name of Sus scrofa domesticus or Sus domesticus.
The domestic pig is a subspecies of the wild boar or wild pig, known scientifically as Sus scrofa. "Sus" is the genus name, while "scrofa" is the species name. Pigs belong to the Suidae family, part of the order Artiodactyla, which consists of hoofed animals that spread their weight between their fourth and third toes. They are mammals that possess a backbone and belong to the phylum Chordata. The scientific kingdom they belong to is Animalia, or the animal kingdom.