The hoary fox is a small fox of open landscapes in central and eastern Brazil, with gray fur and a dark stripe along its back and tail.
It has a short muzzle and small teeth, gray fur, a pale underside, and reddish ears and legs. A dark stripe runs along its back to the tip of its tail.
Researchers radio-tracked two Hoary Fox breeding pairs in Mato Grosso, Brazil, from October 2002 to April 2003. The study site was a mosaic of cattle pasture and Cerrado vegetation. The neighbouring pairs had adjacent home ranges, estimated at 140 to 299 hectares, and the male and female ranges within each pair overlapped extensively.
After both foxes in one pair died, the neighbouring pair gradually moved into the vacant area and expanded its range over about half of the former territory. The paper records this change in space use after the loss of a neighbouring pair. The study followed only two pairs at one site.
An extinction-risk assessment has not been added yet.
After a neighbouring pair died, the tracked Hoary Fox pair gradually occupied about half of its former range.