Common degu

The common degu (Octodon degus; /ˈdeɪɡuː/), or, historically, the degu, is a small hystricomorpha rodent endemic to the Chilean matorral ecoregion of central Chile. The name degu on its own indicates either the entire genus Octodon or, more commonly, just the common degu. Common degus belong to the parvorder Caviomorpha of the infraorder Hystricognathi, along with the chinchilla and guinea pig. The word degu comes from the Mapuche word dewü, meaning 'mouse' or 'rat'.

Although found in a relatively small natural habitat when compared to other species of rodents, degus are prolific and thus classified as a least-concern species by IUCN. The animal may be kept as a domestic pet, though there are prohibitions on their ownership in some territories. As a pet, the degu is larger than a golden hamster but smaller than a fancy rat.