A hornet is a type of large wasp known for its aggressive behavior and potent sting. They belong to the family Vespa and are typically characterized by their robust bodies and distinctive yellow and black markings. Hornets build nests from paper-like material made from chewed wood fibers, often found in trees or shrubs. Hornets play a role in the ecosystem by controlling pest populations, as they primarily feed on other insects. While they can be beneficial, their stings can be painful and may cause allergic reactions in some individuals. It is important to exercise caution around hornet nests.