Pigs Sus scroll domesticus constantly communicate with each other. They have a range of different oinks, grunts and squeals which have distinct meanings.
Pigs are extraordinarily intelligent. They are curious and insightful animals who are widely accepted as being smarter than young children of at least 3 years of age, dogs, and even some primates. They are extremely social animals. Forming close bonds with other individuals and love close contact and lying down together. Pigs are very clean, keeping their toilet area far away from where they lie down and eat. Even newborn piglets will leave the nest to go to the toilet within hours of birth. Usually very peaceful animals, rarely showing aggression. The exception, as with many animals, is when a mother (sow) with her young offspring is provoked or threatened. Wild pigs play an important role in managing ecosystems and maintaining biodiversity. By rooting, and thus disturbing the soil, they create areas for new plant colonisation. They also spread fruit plants by dispersing their seeds.
Pigs have a tremendous sense of smell. The large round disk of cartilage at the tip of the snout is connected to muscle that gives it extra flexibility and strength for rooting in the ground.