Fire ants are small, reddish-brown insects known for their painful stings. They build large, visible mounds in open areas, often in sunny locations. These ants are social creatures, living in colonies that can contain thousands of individuals. Fire ants are omnivorous, feeding on a variety of foods, including seeds, insects, and sugary substances. They are found primarily in the southern United States and other warm regions. Their aggressive behavior and ability to swarm make them a nuisance, especially when their nests are disturbed.