The hoary fox or hoary zorro (''Lycalopex vetulus''), also known as ''raposinha-do-campo'' in

Brazil Brazil ( pt, Brasil; ), officially the Federative Republic of Brazil (Portuguese: ), is the largest country in both South America and Latin America. At and with over 217 million people, Brazil is the world's fifth-largest country by area ...

( Portuguese for "little meadow fox"), is a

species In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriat ...

of zorro or "false" fox

endemic Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found else ...

. Unlike many other foxes, it feeds primarily on small invertebrates such as insects.

Description

The hoary fox has a short muzzle, small teeth, a short coat, and slender limbs. The upper part of the body is grey, and the underside of the body is cream or fawn. The tail is black on the tip with a marked dark stripe along the upper surface, which in male animals may extend all the way along the back to the nape of the neck. The ears and outside part of the legs are reddish or tawny, and the lower jaw is black. Some melanistic individuals have also been reported. It is small for a fox, weighing only , with a head and body length of , and a tail . Together with its slender form, the small size of the hoary fox makes it an agile and fast-running animal, while its relatively weak teeth adapt it to feeding on invertebrates, rather than larger prey.

Behaviour and diet

Hoary foxes are nocturnal, and largely solitary outside of the

breeding season Seasonal breeders are animal species that successfully mate only during certain times of the year. These times of year allow for the optimization of survival of young due to factors such as ambient temperature, food and water availability, and ch ...

. They mainly eat insects, especially

termite Termites are small insects that live in colonies and have distinct castes ( eusocial) and feed on wood or other dead plant matter. Termites comprise the infraorder Isoptera, or alternatively the epifamily Termitoidae, within the order Blat ...

s and

dung beetle Dung beetles are beetles that feed on feces. Some species of dung beetles can bury dung 250 times their own mass in one night. Many dung beetles, known as ''rollers'', roll dung into round balls, which are used as a food source or breeding cha ...

s, but also may eat rodents, small birds, and fruit. Individuals have widely varying home ranges, depending on the local environment and reported examples are as follows: for 1 adult female in southern

Bahia Bahia ( , , ; meaning "bay") is one of the 26 states of Brazil, located in the Northeast Region of the country. It is the fourth-largest Brazilian state by population (after São Paulo, Minas Gerais, and Rio de Janeiro) and the 5th-larges ...

, for a group consisting of an adult breeding pair and 5 juvenile offspring in a pasture of

Minas Gerais Minas Gerais () is a state in Southeastern Brazil. It ranks as the second most populous, the third by gross domestic product (GDP), and the fourth largest by area in the country. The state's capital and largest city, Belo Horizonte (literall ...

, and for 2 breeding pairs out of 3 study groups from pastures in eastern Mato Grosso.

Range

The hoary fox is native to south-central

, although some sightings have been recorded from the north of the country, and

Pleistocene The Pleistocene ( , often referred to as the ''Ice age'') is the geological Epoch (geology), epoch that lasted from about 2,580,000 to 11,700 years ago, spanning the Earth's most recent period of repeated glaciations. Before a change was fina ...

fossils are known from

Argentina Argentina (), officially the Argentine Republic ( es, link=no, República Argentina), is a country in the southern half of South America. Argentina covers an area of , making it the List of South American countries by area, second-largest ...

. Although they may be found in more marginal habitats, they usually live in the cerrado, between elevation, where open woodlands, bushlands, and savannahs that are smooth or scattered with trees occur. No subspecies are recognized.

Reproduction

Females usually give birth to two to four pups in August to September, after a gestation period around 50 days. The

sex ratio The sex ratio (or gender ratio) is usually defined as the ratio of males to females in a population. As explained by Fisher's principle, for evolutionary reasons this is typically about 1:1 in species which reproduce sexually. Many species dev ...

of the pups is equal between males and females. The female prepares a den in which to give birth, sometimes using the burrows of other animals. Weaning occurs around 4 months of age. Both parent participate in rearing of the pups.

References

{{Taxonbar, from=Q257432 hoary fox Mammals of Brazil Endemic fauna of Brazil Carnivorans of South America Least concern biota of South America hoary fox