The name for a group of pigs depends on the animals' ages. A group of young pigs is called a drift, drove or litter. Groups of older pigs are called a sounder of swine, a team or passel of hogs or a singular of boars.
Pigs also are called hogs or swine. A male pig of any age is called a boar; female pigs are sows. A baby pig is called a piglet.
Pigs are very social; they form close ties to one another and are comforted by the close proximity of other pigs. They are extremely intelligent and gregarious, communicating with each other constantly through a complex vocabulary of oinks, grunts and squeals. Most pigs are peaceful and rarely show aggression unless they perceive a threat. Contrary to their reputation, pigs are very clean. Even very young pigs relieve themselves in an area far away from where they lie down and sleep.