Chinchillas are native to the Andes Mountains of South America, where they inhabit rocky, arid slopes at elevations ranging from roughly 9,000 to 16,000 feet. Two species exist: Chinchilla chinchilla (the short-tailed chinchilla) and Chinchilla lanigera (the long-tailed chinchilla). The long-tailed species is the ancestor of virtually all domestic chinchillas kept as pets and raised commercially today.
The harsh Andean environment shaped the chinchilla's most distinctive feature — its extraordinarily dense fur. With roughly 20,000 hairs per square centimeter, chinchilla fur is among the densest of any land mammal, providing insulation against the cold, dry mountain air. This remarkable coat also made the chinchilla a target for human exploitation, a factor that would define much of the animal's history.
Wild chinchillas are social animals that live in colonies called herds, sometimes numbering in the hundreds. They are crepuscular, most active during dawn and dusk, and shelter in rock crevices during the heat of the day. Their natural diet consists of grasses, seeds, bark, and other plant material adapted to the sparse vegetation of the high Andes. These behavioral and dietary traits remain evident in domestic chinchillas today.
The name chinchilla is believed to derive from the Chincha people of the Andes, who inhabited parts of what is now Peru and valued the animal's fur long before European contact. The Chincha and other indigenous groups used chinchilla pelts for clothing and ceremonial purposes, integrating the animal into their cultural and economic life.