Appearance
The South American gray fox is a small fox-like canid, weighing 2.5 to 5.45 kilograms , and measuring 65 to 110 centimetres in length including a tail of 20 to 43 cm . The head is reddish-brown flecked with white. The ears are large and there is a distinct black spot on the chin. The pelage is brindled, with agouti guard hairs and a short, dense pale undercoat. The underparts are pale grey. The limbs are tawny and the thighs are crossed by a dark bar. The long, bushy tail has a dark dorsal stripe and dark tip with a paler, mottled underside.
Habitat
The South American gray fox is found in the Southern Cone of South America, particularly in Argentina and Chile. Its range comprises a stripe, both sides of the Andes Mountain Range between parallels 17ºS and 54ºS .In Argentina, this species inhabits the western semiarid region of the country, from the Andean spurs to meridian 66ºW. South from the Río Grande, the distribution of the fox widens reaching the Atlantic coast. In Chile, it is present throughout the country. Its presence in Peru has been mentioned; to date, however, there has been no confirmation of it. The South American gray fox was introduced to the Falkland Islands in the late 1920s early 1930s and is still present in quite large numbers on Beaver and Weddell Islands plus several smaller islands.
The South American gray fox occurs in a variety of habitats, from the warm, arid scrublands of the Argentine uplands and the cold, arid Patagonian steppe to the forests of southernmost Chile.
Reproduction
The South American gray fox breeds in late austral fall, around March. After a gestation period of two months, two to four kits are born in a den. Not much else is recorded about its lifestyle.
Food
The diet varies in different parts of its range and at different times of year. It consists mainly of mammals, birds, arthropods, bird eggs, reptiles, fruit and carrion. The main prey items seem to be small mammals, especially rodents. Fruits eaten include ''Cryptocarya alba'', ''Lithraea caustica'' and ''Prosopanche spp''.References:
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