Nats are small flying insects belonging to the family Ceratopogonidae. They are often found in damp or marshy areas and are known for their biting behavior. Nats are typically active during warm months and are attracted to light, making them common around outdoor gatherings. These insects are usually less than 3 millimeters long and can be mistaken for mosquitoes due to their similar appearance. While some species are harmless, others can cause irritation with their bites. Nats play a role in the ecosystem as both pollinators and a food source for various birds and other predators.