Fox is a common name for many species of alert omnivorous
mammals belonging to the Canidae family. Foxes are small-to-medium-size canids
(slightly smaller than a medium-size domestic dog), with a flattened skull,
upright triangular ears, a pointed, slightly upturned snout, and a long bushy
tail.Members of about 37 species are referred to as foxes, of which only 12
species actually belong to the Vulpes genus of "true foxes". By far
the most common and widespread species of fox is the red fox (Vulpes vulpes),
although various species are found on almost every continent. The presence of
fox-like carnivores all over the globe, together with their widespread
reputation for cunning, has contributed to their appearance in popular culture
and folklore in many societies around the world (see also Foxes in culture).
The hunting of foxes with packs of hounds, long an established pursuit in
Europe, especially the British Isles, was exported by European settlers to
various parts of the New World.The word fox comes from Old English, which
derived from Proto-Germanic *fuhsaz. This in turn derives from
Proto-Indo-European *puḱ- ‘thick-haired; tail’.In the wild, the typical
lifespan of a fox is 2 to 3 years, although individuals may live up to ten
years.
Foxes are generally smaller than other members of the family Canidae
such as wolves, jackals, and domestic dogs. Male foxes weigh, on average,
around 5.9 kilograms (13 lb) while female foxes, weigh around 5.2 kilograms
(11.5 lb). Fox-like features typically include a triangular face, pointed ears,
a long, narrow, sharp muzzle, and a bushy tail.Foxes are normally extremely
wary of humans and are not usually kept as indoor pets; however, the silver fox
was successfully domesticated in Russia after a 45-year selective breeding program.Foxes
are omnivores. The diet of foxes is largely made up of invertebrates such as
insects, and small vertebrates such as reptiles and birds, and also can include
eggs and plants. Many species are generalist predators, but some (such as the
crab-eating fox) have more specialized diets. Most species of fox consume
around 1 kg (2.2 lb) of food every day.Other fox species do not reproduce as
readily as the red fox, and are endangered in their native environments. Key
among these are the crab-eating fox (Cerdocyon thous) and the African bat-eared
fox (Otocyon megalotis). Other foxes such as fennec foxes are not endangered.
Foxes have been successfully employed to control pests on
fruit farms while leaving the fruit intact.Fox attacks on humans are not common
but have been reported. In November 2008, an incident in the United States was
reported in which a jogger was attacked and bitten on the foot and arm by a
rabid fox in Arizona. In July 2002, a 14-week-old baby was attacked in a house
in Dartford, Kent, United Kingdom.In June 2010, 9-month-old twin girls were
bitten on the arms and face when a fox entered their upstairs room in east
London.There are many records of domesticated red foxes and others, but rarely
of sustained domestication. A recent and notable case is the Russian silver
fox, a domesticated silver fox by the Siberian Institute of Cytology and
Genetics in Novosibirsk, since it resulted in visible and behavioral changes,
and is a case study of an animal population modeling according to human
domestication needs.
The current group of domesticated silver foxes are the
result of nearly fifty years of experiments in the Soviet Union and Russia to
domesticate the silver morph of the red fox. Notably, the new foxes became more
tame, allowing themselves to be petted, whimpering to get attention and
sniffing and licking their caretakers. They also became more dog-like as well:
they lost their distinctive musky "fox smell", became more friendly
with humans, put their ears down (like dogs), wagged their tails when happy and
began to vocalize and bark like domesticated dogs. Fox hunting is an activity
that originated in the United Kingdom in the 16th century. Hunting with dogs is
now banned in the United Kingdom, though hunting without dogs is still
permitted. It is practiced as recreation in several other countries including
Australia, Canada, France, Ireland, Italy, Russia and the United States.In many
cultures, the fox appears in folklore as a symbol of cunning and trickery, or
as a familiar animal possessed of magic powers.
In some countries, foxes are major predators of rabbits and
hens. Population oscillations of these two species were the first nonlinear
oscillation studied, and led to the now-famous Lotka-Volterra equation.Unlike
many canids, foxes are not always pack animals. Typically, they live in small
family groups, and are opportunistic feeders that hunt live prey (especially
rodents). Using a pouncing technique practiced from an early age, they are
usually able to kill their prey quickly. Foxes also gather a wide variety of
other foods ranging from grasshoppers to fruit and berries. The gray fox is one
of only two canine species known to climb trees; the other is the raccoon dog.

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