- Most domestic pigs descend from the Eurasian wild boar (Sus scrofa), with domestication occurring independently in the Near East and China approximately 9,000 to 10,000 years ago
- Pigs are highly social and widely considered to be among the most intelligent domesticated animals, often outperforming dogs in cognitive tests
- They possess a specialized snout with a prenasal bone and a disk of cartilage at the tip, used for "rooting" or digging for food
- Domestic pigs in southern Arizona are kept as pets, livestock, and are sometimes found as invasive, feral, or rescued populations ... while state law doesn't prohibit them, local ordinances vary (e.g., Tucson allows up to three miniature pigs)