Your Pet Guide

Colorpoint

The colorpoint pattern is most commonly associated with Siamese cats, but may also appear in any domesticated cat. A colorpointed cat has dark colors on the face, ears, feet, and tail, with a lighter version of the same color on the rest of the body, and possibly some white.



The exact name of the colorpoint pattern depends on the actual color, so there are seal points (dark brown), chocolate points (warm lighter brown), blue points (dark gray), lilac or frost points (silvery gray-pink), red or flame points (orange), and tortie (tortoiseshell mottling) points, among others.

This pattern is the result of a temperature sensitive mutation in one of the enzymes in the metabolic pathway from tyrosine to pigment, such as melanin; thus, little or no pigment is produced except in the extremities or points where the skin is slightly cooler.

For this reason, colorpointed cats tend to darken with age as bodily temperature drops; also, the fur over a significant injury may sometimes darken or lighten as a result of temperature change. The tyrosine pathway also produces neurotransmitters, thus mutations in the early parts of that pathway may affect not only pigment, but also neurological development.

This results in a higher frequency of cross-eyes among colorpointed cats, as well as the high frequency of cross-eyes in white tigers.

White cats

True albinism (a mutation of the tyrosinase gene) is quite rare in cats. Much more common is the appearance of white coat color due to a lack of melanocytes in the skin. A higher frequency of deafness in white cats is due to a reduction in the population and survival of melanoblast stem cells, which in addition to creating pigment producing cells, develop into a variety of neurological cell types. White cats with one or two blue eyes have a particularly high likelihood of being deaf.

Smoke cats

The bottom eighth of each hair is white or creamy-white, with the rest of the hair being a solid color. Genetically this color is a non-agouti cat with the dominant inhibitor gene; a non-agouti version of the silver tabby. Smoke cats will look solid colored until they move, when the white undercoat becomes apparent. It is mostly found in pedigreed cats (especially longhair breeds) but also present in some domestic longhaired cats.

Cats are a common companion animal in Europe and North America, and their worldwide population exceeds 500 million. In 1998 there were around 43 million cats in Western Europe, 33 million in Eastern Europe, seven million in Japan and three million in Australia.

A 2007 report stated that about 37 million US households owned cats, with an average of 2.2 cats per household giving a total population of around 82 million. This is slightly more than the 72 million pet dogs in that country.

Although cat ownership has commonly been associated with women,a 2007 Gallup poll reported that men and women were equally likely to own a cat.The ratio of pedigree/purebred cats to random-bred cats varies from country to country. However, generally speaking, purebreds are less than ten percent of the total population.

According to the Humane Society of the United States, as well as being kept as pets, cats are also used in the international fur trade. About 24 cats are needed to make a cat fur coat, although cat fur is also used in gloves, hats, shoes, blankets and stuffed toys.This use has now been outlawed in several countries, including the United States, Australia and the European Union.

However, some cat furs are still made into blankets in Switzerland as folk remedies that are believed to help rheumatism. It has long been common for cats to be eaten in some parts of China and in some other Asian countries. According to the Chengdu Business Daily, people in southern China's Guangdong province ate 10,000 cats a day. Animal People estimates that 4 million cats are killed and consumed in Asia every year.

The concept of a cat breed appeared in Britain during the late 19th century. The current list of cat breeds is quite large: with the Cat Fanciers' Association recognizing 41 breeds, of which 16 are "natural breeds" that probably emerged before humans began breeding pedigree cats, while the others were developed over the latter half of the 20th century.

The owners and breeders of show cats compete to see whose animal bears the closest resemblance to the "ideal" definition and standard of the breed. Because of common crossbreeding in populated areas, many cats are simply identified as belonging to the homogeneous breeds of domestic longhair and domestic shorthair, depending on their type of fur.

In the United Kingdom and Australasia, non-purebred cats are referred in slang as moggies (derived from "Maggie", short for Margaret, reputed to have been a common name for cows and calves in 18th century England and latter applied to housecats during the Victorian era).

In the United States, a non-purebred cat is sometimes referred to in slang as a barn or alley cat, even if it is not a stray. Cats come in a variety of colors and patterns. These are physical properties and should not be confused with a breed of cat. Some original cat breeds that have a distinct phenotype that is the main type occurring naturally as the dominant domesticated cat type in their region of origin are sometimes considered as subspecies and also have received names as such in nomenclature, although this is not supported by feline biologists. Some of these cat breeds are:

• F. catus anura - the Manx
• F. catus siamensis - the Siamese
• F. catus cartusenensis - the Chartreux
• F. catus angorensis - the Turkish Angora