Three Dog Night is an American rock band formed in 1967, known for their eclectic and harmonious sound that draws from rock, pop, and blues. The band's name is derived from an Australian Aboriginal expression describing cold nights where one needs to sleep with three dogs for warmth. The original lineup featured vocalists Danny Hutton, Cory Wells, and Chuck Negron, along with musicians Jimmy Greenspoon, Joe Schermie, Michael Allsup, and Floyd Sneed. They achieved significant success in the late 1960s and early 1970s with chart-topping hits like "Joy to the World," "Mama Told Me (Not to Come)," and "One." Despite lineup changes and hiatuses, Three Dog Night continues to perform, maintaining a lasting influence on the rock music scene.