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A cat eating a fish under a chair, a mural in an Egyptian tomb dating to the 15th century BC It was long thought that the domestication of the cat began in ancient Egypt, where cats were venerated from around 3100 BC, However, the earliest known indication for the taming of an African wildcat was excavated close by a human Neolithic grave in Shillourokambos, southern Cyprus, dating to about ...
Definition Finding the direction of the cross product by the right-hand rule The cross product of two vectors a and b is defined only in three-dimensional space and is denoted by a × b.In physics and applied mathematics, the wedge notation a ∧ b is often used (in conjunction with the name vector product), although in pure mathematics such notation is usually reserved for just the exterior ...
Crossbreed between the Donskoy, Oriental Shorthair and Siamese; before this, it was between the Balinese and Javanese. Oriental. Hairless, velour, brush, or straight coat. All. Pixie-bob. United States [11] Mutation (falsely claimed to be a hybrid of the domestic cat and the bobcat ( Lynx rufus) early on) Medium.
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The Maine Coon is one of the largest domesticated cats. It has a distinctive physical appearance and valuable hunting skills. The breed was popular in cat shows in the late 19th century, but its existence became threatened when long-haired breeds from overseas were introduced in the early 20th century. The Maine Coon has since made a comeback, in 2...
Fur coat
The Maine Coon is a long- or medium-haired cat. The coat is soft and silky, although texture may vary with coat color. The length is shorter on the head and shoulders and longer on the stomach and flanks, with some cats having a leonine ruff around their neck. Minimal grooming is required for the breed compared to other long-haired breeds, as their double coat is mostly self-maintaining owing to a light-density undercoat. The coat is subject to seasonal variation,with the fur being thicker in...
Coat colors
Maine Coons can have any colors that other cats have. Colors indicating crossbreeding, such as chocolate, lavender, the Siamese pointed patterns or the "ticked" patterns, are not accepted by some breed standards. This is not universal; the ticked pattern, for example, is accepted by TICA and CFA. The most common pattern seen in the breed is brown tabby. All eye colors are accepted under breed standards, with the exception of blue or odd-eyes, i.e. heterochromia iridium (two eyes of different...
Size
The Maine Coon was considered the largest breed of domestic cat until the introduction of the Savannah cat in the mid 1980s, and is still the largest non-hybrid breed.[citation needed] On average, males weigh from 18 to 22 lb (8.2 to 10.0 kg), with females weighing from 12 to 15 lb (5.4 to 6.8 kg). The height of adults can vary between 10 and 16 in (25 and 41 cm) and they can reach a length of up to 38 in (97 cm), including the tail, which can reach a length of 14 in (36 cm) and is long, tape...
Life expectancy
Pet insurance data obtained from a study during years 2003–2006 in Sweden puts the median lifespan of the Maine Coon at > 12.5 years. 74% lived to 10 years or more and 54% lived to 12.5 years or more.An English study of patient records found a life expectancy of 11 years.
Heart
Hypertrophic cardiomyopathy (HCM) has been observed in Maine Coon populations. A mutation in the MYBPC3gene found in Maine Coons has been associated with HCM. Of all the Maine Coons tested for the MyBPC mutation at the Veterinary Cardiac Genetics Lab at the College of Veterinary Medicine at Washington State University, approximately one-third tested positive. Not all cats that test positive will have clinical signs of the disease, and some Maine Coon cats with clinical evidence of hypertrophi...
Kidney
Polycystic kidney disease (PKD) is an inherited condition in cats that causes multiple cysts (pockets of fluid) to form in the kidneys. These cysts are present from birth. Initially, they are very small, but they grow larger over time and may eventually disrupt kidney function, resulting in kidney failure. While renal cysts are observed with a low incidence in Maine Coons, PKD appears to be a misnomer in this particular breed. In a recent study spanning 8 years, renal cysts were documented by...
Blue tabby in snowBlack Silver Classic Tabby7-month-old black silver tabby male kittenBlack silver blotched tabby maleBass, Sharyn P. (1983). This Is the Maine Coon Cat. Neptune City, New Jersey: T.F.H. Publications. ISBN 0-87666-867-8.Hayman, Tracey K. (2001). Maine Coon Cat. Dorking, England: Interpret Publishing. ISBN 1-84286-011-9.Hornidge, Marilis (2002). That Yankee Cat: The Maine Coon. Gardiner, Maine: Tilbury House. ISBN 0-88448-243-X.The Cangjie input method ( Tsang-chieh input method, sometimes called Changjie, Cang Jie, Changjei [1] or Chongkit) is a system for entering Chinese characters into a computer using a standard computer keyboard. In filenames and elsewhere, the name Cangjie is sometimes abbreviated as cj.
The Catalan numbers can be interpreted as a special case of the Bertrand's ballot theorem. Specifically, is the number of ways for a candidate A with n+1 votes to lead candidate B with n votes. The two-parameter sequence of non-negative integers is a generalization of the Catalan numbers.
Schrödinger's cat: a cat, a flask of poison, and a radioactive source connected to a Geiger counter are placed in a sealed box. As illustrated, the quantum description uses a superposition of an alive cat and one that has died. In quantum mechanics, Schrödinger's cat is a thought experiment, sometimes described as a paradox, of quantum superposition.
