Octodon degus are herbivorous rodents that are adapted anatomically and behaviorally to utilize a fibrous diet with moderate-to-low levels of nonstructural carbohydrate. Captive degus should consume foods containing nutrients comparable to those consumed by free-ranging animals. The species is highly social, demonstrating a broad array of communication methods that make them appealing as a companion animal species. Controlled research studies with degus have produced a wealth of information that facilitates the care of this species in captivity.