List of ctenomyids
Ctenomyidae is a family of fossorial mammals in the order Rodentia and part of the Caviomorpha parvorder. Members of this family are called ctenomyids or tuco-tucos. They are found in southern South America, primarily in shrublands and grasslands, though some species can be found in forests, savannas, deserts, wetlands, and coastal areas. They range in size from the white-toothed tuco-tuco, at plus a tail, to Conover's tuco-tuco, at plus a tail. Ctenomyids are herbivores and eat a wide variety of vegetation. No ctenomyids have population estimates, but ten species are categorized as an endangered species, and three—Reig's tuco-tuco, Roig's tuco-tuco, and the social tuco-tuco—are categorized as critically endangered.
The 59 extant species of Ctenomyidae are all contained in a single genus, Ctenomys. A few extinct prehistoric ctenomyid species have been discovered, though due to ongoing research and discoveries, the exact number and categorization is not fixed.