Pigs typically have 12 to 14 nipples, though the number can vary between individuals. Female pigs, or sows, generally have more nipples than males. This anatomical feature is important for nursing piglets, as each piglet needs to latch onto a nipple to receive milk.
The arrangement and quantity of nipples ensure that a sow can adequately feed her offspring, especially since pig litters can range from 6 to over 12 piglets. Having enough nipples helps prevent competition among the piglets for milk, which is crucial for their growth and survival in the early stages of life.