Lagostomus Maximus is a scientific name for a burrowing rodent commonly known as the plains viscacha. In South America, it is also known as the "vizcacha" or "chinchillón". In Argentina and Bolivia, it is called the "tuco-tuco". The species is part of the family Chinchillidae, which includes chinchillas and other closely related rodents. Although there are no common English synonyms for Lagostomus Maximus, it is sometimes referred to as the "large-brained viscacha-rat" due to its distinctive brain size and behavior patterns. The species is known for its large ears, which help it hear predators and locate food sources. It is also a social animal, often living in colonies and vocalizing to communicate with other viscachas.