Pichi

Pichis are relatively small armadillos, measuring approximately 27 cm (11 in) long, with a tail of about 11 cm (4.3 in). Adults weigh anything from 700 to 1,500 grams (25 to 53 oz), and males may be slightly larger than females. The carapace varies from light yellow to near-black, and consists of heavy scapular and pelvic shields composed of rectangular osteoderms, and separated by six to eight movable bands. An additional "nuchal" band lies in front of the scapular shield, and there is also a triangular shield on top of the head, and further osteoderms along the tail. The underside of the animal has a coat of tan-coloured hair, which is thicker and longer in winter; there are also a few long hairs protruding through small holes near the posterior edge of some of the scales. Pichis have well-developed claws on all four feet. The ears are short, and the eyes dark and relatively small. Pichis have eight teeth on each side of the upper jaw, and nine on the lower. The absence of teeth on the premaxillary bone of the upper jaw is one of the features that allows them to be distinguished from other, similar, armadillos, such as the six-banded armadillo. Females have two teats, located in the chest region, and, like most armadillos, lack a true vagina, instead having a single urogenital sinus about 18 mm (0.71 in) in length. …

Pichis are found from central and southern Argentina (Patagonia), west to the Andean grasslands of Chile, and south to the Strait of Magellan. Within this region, it most commonly inhabits arid or semiarid steppe grasslands, but may be found in other environments if they have sandy soils suitable for burrowing.

Pichis are solitary and diurnal. They dig burrows in sandy soil, which they use for shelter from extremes of weather. The burrows have a dome-shaped entrance and a single passage that can reach several metres in length, before terminating in a bare, unlined, resting chamber. They do not inhabit their burrows for extended periods, digging new ones at least every few weeks, and sometimes daily. During the winter, when the weather is more extreme, the burrows may be deeper than they are in the summer, reaching as much as 1.5 m (4 ft 11 in) below ground. Pichis are solitary outside of the mating season. When threatened, they wedge themselves into their shallow burrow making it difficult for an attacker to drag them out because of their jagged scales, or else lie flat on the ground to protect their vulnerable belly. They have been reported to make both purring sounds and a loud grunt or scream.