The ordinary chinchilla is about io in.
The Peruvian chinchilla (C, brevicaudata) is larger, with relatively shorter ears and tail; while still larger species constitute the genus Lagidium, ranging from the Andes to Patagonia, and distinguished by having four in place of five front-toes, more pointed ears, and a somewhat differently formed skull.
Caudete (5913), Chinchilla, or Chinchilla de Monte-Aragon (6680), La Roda (7066), Tobarra (7787), Villarrobledo (10,125) and Yeste (6591) are important markets for the sale of agricultural produce.
The silver grey is a uniform-coloured breed, the fur of which is a rich chinchilla grey, varying in depth in the different strains.
Another industry of a different character is that of breeding the fur-bearing chinchilla (C. laniger), which is a native of the higher plateaus.
In Chinchilla the fore-feet have five and the hind four digits, the tail is long and bushy, and the auditory bullae are enormous, appearing on the top of the skull; Lagidium has four digits in both foreand hind-feet, and Lagostomus three only in the hindfeet, while the auditory bullae are much smaller (see Chinchilla and Viscacha).
Of these the true chinchilla, Chinchilla lanigera, C. brevicaudata, Lagidium peruanum and L.
The rodents are the most numerously represented order, which includes the coypu or nutria (Myopotamus coypus), the chinchilla (Chinchilla laniger), the tuco-tuco (Ctenomys brasiliensis), a rabbit, and 12 species of mice - in all some 12 genera and 25 species.