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Cat Identification
The vast majority of cats in
American homes and shelters fall into
the domestic short, medium or long hair category. But while they may not
be rare purebreds, their individuality is expressed through both behavior
and diverse coat markings. Let's examine the terminology
used to describe their coats of many colors.
Click on pictures for larger
view

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SOLID COLOR CATS
Did you know all cats have the gene
that produces tabby
(stripes/spots) markings? However, in order for the tabby
markings to be prominent, the cat must also have
the gene for agouti or light and dark banded hair
from one of its parents. Without it, the hair shafts will be a
solid color. In bright light you can sometimes see the
"ghost"
tabby stripes on a solid color cat.
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TORTOISESHELLS/CALICOS
A tortoiseshell cat has red hairs and
black hairs in the same
coat. Since it takes two X chromosomes to create this coat pattern,
tortoiseshell cats are almost exclusively female. (Only in very rare
cases
will this coat appear on a male and he will most likely be sterile.)
When the hairs are blue (gray) and cream, the pattern is dilute
tortoiseshell.
A calico cat is a red and black tortoiseshell with white patches, a
dilute
calico one who is blue and cream with white patches. And last, a
torbie is a tortoiseshell that bears patches of any tabby pattern.
They usually have a blaze of orange somewhere on their face.
The difference between a calico and a
tortoiseshell is this:
With a calico, there is a significant amount of white,
and the two colors are broken up into distinct patches.
This has to do with the interaction of white spotting.
With a tortoiseshell, the
three colors are blended and
don't form distinct patches. A tortoiseshell may have
significant portions of white as well, but the remaining
colors are blended
(this particular pattern is called a tortoiseshell and white).
A torbie, or patched tabby,
is a tortoiseshell where the
tabby pattern is very distinct all over the cat.
A calico or tortoiseshell may have distinct tabby
pattern on the red or cream patches (has to do with
another gene we won't get into at this juncture),
but no patterning on the other color. This isn't a torbie.
A torbie is clearly patterned all over the cat -- though never on the white.
Tortoiseshells

Calico

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POINTED CATS
The pointed coat pattern is the result
of gene mutations that
cause the coolest parts of the cat's body to be a different color
or pattern than the rest of the body. The areas that bear the
pointing are ears, muzzle, tail and legs. A cat with solid color
points is called a color point and is generally referred by the color
of the points such as a chocolate point Siamese. Point patterns
include tortie point (tortoiseshell points), lynx point (striped
points),
tortie lynx point (torbie points).
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SILVER CATS
Another gene mutation results in
removing the yellowish-tan pigment
from a cat's hairs. The regular tabby becomes a silver tabby. In
solid
color cats, the silver gene lightens the hair shaft resulting in a
smoke
coloration where only the tip of the hair is colored and the rest is
white.
Ticked tabbies are affected by the silver gene to the point that the
lighter
bands on the hair shafts are both further lightened and widened. These
coats are referred to as shaded. The lighter bands are further widened
in the chinchilla coat pattern leaving color only at the tips of the hairs.
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