Description: English: Distribution of Long-tailed chinchilla. Date: 10 January 2021. Source: Roach, N. & Kennerley, R (2016). "Chinchilla lanigera". The IUCN Red List of Threatened Species 2016: e.T4652A117975205. DOI:10.2305/IUCN.UK.2016-2.RLTS.T4652A22190974.en. Author: 蕭漫.
The Plains Viscacha or plains vizcacha (Lagostomus maximus) is a species of rodent in the Chinchillidae family. It is the only living species within the genus Lagostomus. It is found in Argentina, Bolivia, and Paraguay. The plains viscacha is the largest species of the family Chinchillidae. They construct elaborate burrows that house successive colonies for decades.