Domestic Cats

Cats have been domesticated since prehistoric times, perhaps for 10,000 years; there is evidence (from a Neolithic grave on Cyprus) of some sort of association with humans dating back to the 8th cent. BC Cats have been greatly valued as destroyers of vermin, as well as for their ornamental qualities. The ancient Egyptian domestic cat, which spread to Europe in historic times, was used as a retriever in hunting as well as for catching rats and mice. It and the modern domestic cat, F. catus, are descended from Felis silvestris lybica, the Near Eastern subspecies of the wildcat. The domestic cat can and does interbreed with the subspecies of wildcat found in Eurasia and Africa. Cats were venerated in the ancient Egyptian and Norse religions, and they have also been the object of superstitious fear, especially in the Middle Ages, when they were tortured and burned as witches.

Cats vary considerably in size; males commonly weigh 9 to 14 lb (4.1–6.4 kg) and females 6 to 10 lb (2.2–4.5 kg). They have coats of varying length and a wide variety of colors: black, white, and many shades of red, yellow, brown, and gray. A cat may be solid-colored or have patches or shadings of a second color. An extremely common pattern, probably derived from wild ancestors, is tabby: a red, brown, or gray background, striped with a lighter shade of the same color. The tortoiseshell pattern is a mixture of red, yellow, and black patches. The calico pattern is similar, but with large patches of white.

Besides the common house cat, with its natural variation, the species F. catus includes recognized breeds with characteristics maintained by breeders and fanciers through selective mating. Breeds are established when particular traits breed true for several generations; the known lineage of an animal is called its pedigree. Cat fanciers' associations set standards, establish pedigrees, and conduct cat shows. There are seven such associations in the United States, one in Canada, and one in Great Britain. The short-haired breeds are in general more slender and active than the long-haired.

The long-haired breeds are the Persian and Himalayan; angora is an old term denoting any long-haired cat. Persians may be black, white, or any of a great variety of colors, including calico, tortoiseshell, tabby, and cameo (cream with red shadings). The Himalayan breed resulted from the crossing of a Siamese with a Persian cat; Himalayans have the stocky bodies and long hair of Persians, with Siamese coloring.

All other breeds are short-haired. Abyssinians have long bodies and ruddy brown coats with ticking (marking on each hair) of darker brown or black. They are thought to be the most unchanged descendants of the ancient Egyptian domestic cat. Siamese are slender cats with almond-shaped blue eyes, and white, cream, or fawn-colored coats with brown or gray areas, called points, on the feet, tail, ears, and face. Show Siamese are divided according to color of their coats and markings into seal-, chocolate-, blue-, lilac-, and red-point types. Burmese are small, muscular, roundheaded cats with medium to dark brown coats. Manx are tailless cats of various colors; their hind legs are longer than their forelegs, so that the rump is elevated. They probably arose by mutation on the Isle of Man in the Irish Sea, although tailless cats also occur in the Orient. The Russian Blue has bright green eyes and an evenly blue-gray coat, distinguished for having two layers of short, thick fur. The Rex is a recent breed resulting from mutation and is the only curly-haired cat. Its short, woolly coat may be any color. Domestic shorthair is also a recognized category in American cat shows; cats of this group differ from the common household cat only in having known parentage for at least two generations.

The Maine coon cat is a non-pedigreed strain of large domestic cats found in Maine and believed to be descended from Persians; coon cats weigh up to 25 lb (11.3 kg). Maltese does not connote a breed but is a name applied indiscriminately to gray cats. In 2006 an American biotechnology firm began selling cats that did not have the glycoprotein that causes an allergic response in humans; the animals had been selectively bred from cats that naturally lacked the allergen.

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