Individuals living at high altitudes of Bolivia (previously considered to be Chaetophractus nationi) are negatively affected by the intense use to make handicrafts. The isolated population on the coast of Buenos Aires Province, Argentina, is negatively affected by mining activities. The species also suffers from habitat loss from sand excavation for concrete production and agricultural activities. In addition, some individuals are killed by hunting dogs and by cars on roads. It is also persecuted as an agricultural pest. The screaming hairy armadillo is heavily hunted for its meat and carapace (including for charangos, a musical instrument, and matracas or maracas), in Bolivia in some parts of the Chaco region. Proceedings of the Zoological Society of London. "Revision of the Genera and Species of Entomophagous Edentata founded on the examination of the specimens in the British Museum". Mammals of the Neotropics: The central neotropics: Ecuador, Peru, Bolivia, Brazil (illustrated ed.). ^ a b c d e f g h i Eisenberg, John Frederick Redford, Kent Hubbard (1999)."Seasonal changes in ovarian steroid hormone concentrations in the large hairy armadillo ( Chaetophractus villosus) and the crying armadillo ( Chaetophractus vellerosus)". ^ Luaces, JP Ciuccio M Rossi LF Faletti AG Cetica PD Casanave EB Merani MS (2011).^ a b c d e IUCN SSC Anteater, Sloth and Armadillo Specialist Group (2017).Mammal Species of the World: A Taxonomic and Geographic Reference (3rd ed.). This armadillo ingests a lot of sand while feeding, and it may occupy as much as 50% of the volume of its stomach at a time. Vertebrates form a significant part of an armadillo's diet, ranging from 27.7% by volume in summer to 13.9% in winter, the most common prey species being lizards, birds, frogs, and the mice species Eligmodontia typus and Phyllotis griseofulvus. The animals increase their weight by up to 10% in winter, forming a layer of subcutaneous fat 1 to 2 cm (0.39 to 0.79 in) thick. The armadillo is omnivorous its diet consists of insects, vertebrates and plant material (especially pods of Prosopis), varying considerably depending upon the season. When not in its burrow, the animal spends most of its time foraging. The animal does not build a nest in its burrow. The home range of an armadillo is recorded to consist of a minimum area of 3.4 ha (8.4 acres). A burrow may be 20 to 38 cm (7.9 to 15.0 in) in diameter and may be several metres long. When an animal is occupying a burrow, the entrance is usually sealed. It has multiple burrows in its range, and each burrow may have more than one entrance. It often burrows at the base of bushes and shrubs. It can subsist for long periods without water. The armadillo is nocturnal by summer and diurnal in winter. The average annual rainfall in its main range is 200 to 600 mm (7.9 to 23.6 in), while the rainfall averages 1,000 mm (39 in) annually in the area of the Buenos Aires population. It is absent in rocky areas where the armadillo would not be able to burrow. Its natural habitats are subtropical or tropical dry forests, temperate shrubland, subtropical or tropical dry shrubland, temperate grassland, subtropical or tropical dry lowland grassland, hot deserts, temperate desert, arable land, pastureland, and plantations. An isolated population is found in eastern Buenos Aires Province in Argentina. It is found in parts of the Gran Chaco and Pampas areas of Argentina, Bolivia, and Paraguay. The screaming hairy armadillo is a burrowing armadillo of arid areas from low to high altitudes. The hair on the dorsum is light brown in colour. The armadillo has 18 bands of which six to eight are movable bands. These armadillos have more hair growth than other armadillo species. Toes 5/5, the outer and inner hinder small." "The forehead convex, with many polygonal shields the dorsal shield covered with abundant elongated bristly hairs the underside of the body covered with close hairs. The animal was initially described by Gray as follows: The male weighs between 543 to 1,329 grams (19.2 to 46.9 oz), with an average of 860 grams (30 oz), while the range of weight for the female is 257 to 1,126 grams (9.1 to 39.7 oz), with average weight as 814 grams (28.7 oz). The male armadillo has a length ranging from 328 to 400 mm (12.9 to 15.7 in) with an average length of 376 mm (14.8 in), while the length of the female ranges from 265 to 419 mm (10.4 to 16.5 in) with an average length of 368 mm (14.5 in). This is one of the smallest and slenderest species of the genus Chaetophractus, but it has longer ears than others in its genus. Illustration of the screaming hairy armadillo by Joseph Wolf provided in its first description by Gray in 1865.
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