Genus Casuarius, commonly referred to as Cassowaries, is a flightless bird species that are native to the tropical forests of Australia, Papua New Guinea, and the surrounding islands. Synonyms for the Genus Casuarius include the Southern Cassowary, Bennett's Cassowary, and the Double-wattled Cassowary. These names refer to the different species of Cassowaries that are identified based on their physical and behavioral characteristics. The Southern Cassowary is the most well-known species of the Genus Casuarius, known for its distinctive bright blue and red neck and its aggressive behavior. Bennett's Cassowary and the Double-wattled Cassowary are less common, with slightly different physical features and behavior patterns.