Monday, 16 June 2014

FOX

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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