The Degu (Octoon degus) is a small caviomorph rodent that is native to Chile. It is sometimes referred to as the Brush-Tailed Rat (although not closely related to the rat family) and is also called the Common Degu, to distinguish it from the other members of the genus Octodon. Other members are also called degus, but they are distinguished by additional names. The name "degu" on its own, however, indicates either the genus Octodon or, more usually, O. degus. Degus are closely related to the chinchilla and guinea pig, also placed in parvorder Caviomorpha.