What is a Calico Cat? [With Images]

What is a calico cat?

A calico is a domestic cat with a coat pattern that consists of a white base (25-70%) with patches of red and black, red and grey or red and brown. Calicos are not a cat breed, the word calico refers to the coat colour only, and occurs in both random-bred and some purebred cats.

The calico is also known as tricolour.

calico cat in a tree
Calico cat peeking through tree trunks (DepositPhotos)

Related: What’s the difference between a calico and a tortie cat

How does the calico coat pattern occur?

There are four base (solid) colors in cats:

  • black
  • chocolate
  • cinnamon
  • red

Why not white? Because a cat with a colored and white coat (calico or bi-color) has a gene that switches off color in some parts. The gene responsible is known as piebald or spotting gene (abbreviated to S) and is dominant, as signified by the uppercase S. This means a bi-color or calico cat is genetically a colored cat, but the S gene has switched off the color in certain areas.

Calico coat colors

1. Black with red and white calico cats

Black or brown with red and white are the most common color combinations.

Black and red calico cat
Black and red calico cat
black calico cat
Black calico cat

2. Brown with red and white calico cats

Brown and red calico cat
Brown and red calico
calico cat ready to jump
Calico cat (DepositPhotos)

3. Cinnamon with red and white calico cats

Cinnamon and red calico
Cinnamon and red calico

4. Dilute calico cats: gray and cream

Some cats carry the dilution gene causes clumping and an uneven distribution of the pigment granules in the hair shaft, producing a dilution of the coat colors which changes black to grey (blue), chocolate to lilac and and orange to cream. Learn more about dilute calico cats here.

Blue and cream calico cat
Grey and cream dilute calico

5. Dilute calico cats: lilac and cream

Just like dilution genes can cause coat colors to change from black to gray, it can also cause changes from chocolate to lilac and and orange to cream.

Lilac and cream calico
Lilac and cream calico

gray calico cat

Fawn calico

The dilute modifier gene caramelises the coat colour of dilute cats who carry the gene.

The chart below shows the effects of the dilution and the dilute modifier genes on the coat colours.

Dense Dilute Dilute modifier
Black (brown) Blue (silver)
Blue-based caramel



Lilac-based caramel

Fawn Fawn-based caramel


Male calico cats

Only 1/3,000 calico or tortoiseshell cats are male. To understand why calicos are so rare in male cats, we need a basic understanding of genetics.

The red gene:

The red gene
Red Maine Coon

The red (actually known as orange and abbreviated to O) gene is only carried on the X chromosome, which makes it sex-linked. The O gene is dominant (all dominant genes are abbreviated in UPPER CASE, all recessive are lower case). The mother’s eggs only carry an X chromosome, but the male sperm can carry either an X or a Y chromosome. Each cat will inherit an X from its mother and an X or Y from the father.

  • Female – XX (X from the mother, X from the father)
  • Male – XY (X from the mother, Y from the father)

Interestingly, the faulty gene for hemophilia, a blood clotting disorder, is also sex-linked and found on the X chromosome. Because females have two chromosomes, the good one prevents her from developing the condition, however as the male-only has one X chromosome, he will develop hemophilia. This is the same for colour blindness in human males too.

Female = XX

Male = XY

As the male cat only has one X chromosome, if it carries the O gene (which remember, is dominant), then he will be an orange/red male. If the X chromosome carries the o (non-orange) gene, then the male will be another colour, usually black.

If however, the female kitten inherits both the O and the o (usually black) gene, then because she has two X chromosomes (instead of an X and a Y like the male), both black and red will show making a tortoiseshell cat. If she also inherits the white spotting gene which is responsible for the white coat colour, she will be black, red and have areas of white.

I like to think of the X chromosome as having four sections (or arms), and the shorter and smaller Y only has three. The extra arm of the X chromosome contains additional genes including the O gene. Most genes (except for the sex-linked X and Y) come in two pairs, one from the mother and one from the father. Therefore the male cat only inherits one O gene (which is dominant) from the X chromosome from his mother.

The male cat only needs one copy of the O gene to be red; however, the female needs two copies of the O gene to be red, which is why female ginger cats are seen less often than males.

Female inheritance:

For the female inheriting the red and black genes from both parents, the following may occur:

  • O (from mother) O (from father) OO=Ginger cat
  • o (from mother) o (from father) oo=Black cat
  • O (from mother or father) o (from mother or father) Oo=Tortie cat

Male inheritance:

In the male cat, orange is dominant over black, so if he inherits one O gene and one o (non-orange) gene, he will be orange. So the following will occur:

  • O (from the mother) o (from the father Oo=Ginger cat
  • 0 (from mother) o (from father) oo=Black cat

Calico cat overview

Why are females black and orange?

Females carry two X chromosomes (one from each parent), a process known as x-inactivation or Lyonization occurs during fetal development. Every cell has one active and one silenced X chromosome, this includes the melanocytes, which are the cells responsible for hair colour. Therefore the information contained in the active X chromosome is used, and the information in the silenced X chromosome isn’t, this results in both male and females only have one X (active) chromosome per cell.

As this happens in the female carrying both orange and black, the random nature of inactivation means both red and black can appear in the coat depending on which X chromosome has been inactivated in the cell.

Just to complicate things more, the calico cat is essentially a tortoiseshell cat with the addition of the piebald (spotting) gene, this gene turns parts of the coat white by switching off the colours in some areas.

Are calico cats sterile?

We already know that calicos are almost always female cats, and they are as fertile as any other female cat. It is very rare for a male to be calico when he is; he is almost always sterile.

Male calico cats

We know that for a cat to have a calico cat, two X chromosomes are necessary, and the male has one. So how is it possible that some male cats are calico?

  • Klinefelter syndrome: The male inherits an extra X chromosome due to an error during meiosis, which is the division of parent cells to produce sex cells.
  • Chimerism: Two recently fertilised eggs (XX and XY) that have fused, meaning there is one cat with two distinct sets of DNA. This makes him a chimera.
  • Mosaics: One fertilised egg develops into two distinct cell lines due to a random error in a cell of the developing embryo.

Breeds of cat which calico is accepted

The most common type of calico cat is the domestic, or moggy. However, it can be found in some pure breeds of cat too.

  • American Bobtail
  • American Curl
  • American Shorthair
  • American Wirehair
  • British Shorthair
  • Cornish Rex
  • Devon Rex
  • Exotic
  • Japanese Bobtail
  • Devon Rex
  • German Rex
  • Maine Coon
  • Manx
  • Munchkin
  • Norwegian Forest Cat
  • Oriental
  • Persian
  • Scottish Fold
  • Scottish Shorthair
  • Siberian
  • Sphynx

Official state cat of Maryland

Baltimore state bird, insect and cat

The calico has been the Maryland State cat since 1st October 2001. Calico cats were chosen because their orange, black and white colouring resembles the colouring of the Baltimore oriole, a state bird and the Baltimore checkerspot butterfly, the state insect.

Famous calico cats

  • Hello Kitty: A fictional cat also known as Kitty White, created by Yuko Shimizu.
  • Beckoning cat: A popular Japanese talisman also known as Maneki neko that is usually made from porcelain, wood or plastic. Its literal translation is ‘invitation cat‘, and it represents good luck and fortune to the owner. Its history dates back to the 17th century in the Edo period (1603 – 1867 or 1868).
  • Tama: A calico cat (April 29, 1999 – June 22, 2015) who was famous for being a station master at Kishi Station on the Kishigawa Line in Kinokawa.

Calico cat FAQ

Where does the name calico come from?  Calico is taken from a fabric with the same name which originated in Calicut, (from which the name of the textile came) in southwestern India.

How to pronounce calico  kal-ee-koh

Are calico cats talkative? As calico is a colour and not a breed which many have specific traits, each calico cat will vary.

What is a calico cat personality? Again, this will vary from cat to cat. A calico cat who has been kept with her mother until ten weeks and had plenty of human contact during this time will generally be friendly and get along with people.

What is the difference between a calico cat and a tortoiseshell (tortie) cat? A tortoiseshell cat is black or brown, and orange and are often mottled, a calico also has patches of white. Read here for more information.

Tortoiseshell cat
Tortoiseshell cat
Calico cat
Calico cat

What is the name of a calico cat with tabby markings?  A calico-patched tabby and white is called a caliby.

Caliby cat
Caliby cat

Are calico cats lucky?  Calico cats are associated with the Maneki Neko (also referred to as Lucky cats, Money Cats or Beckoning cat) which is placed in the doorway of businesses and homes to bring good luck and fortune.

Do calico cats have health problems? Female calico cats are as healthy as any other coat colour, however, male cats with Klinefelter’s syndrome (XXY) can have health issues associated with their condition.

Are calico cats chimeras? A male calico may be a chimera, meaning the cat carries two distinct genotypes. We know that identical twins occur when one fertilised egg splits and develops into two babies, who share almost identical genetic profiles. In chimera cats, two non-identical fertilised eggs merge into one during early development which results in a cat with two different cell lines in one body.

Are calico cats expensive? No, the calico is no more expensive than any other cat. Male calico cats are rare, however, they do not attract a higher price tag than female calico cats.

In most cases, a purebred calico cat will cost more than a mixed-breed (domestic cat, or moggy) calico. But all purebred cats cost more than mixed-breed cats.

Calico cat lifespan The lifespan of the calico is between 12-14 years for an indoor cat.

Calico cat names

  • Amber
  • Butterscotch
  • Callie
  • Cleo
  • Harlequin
  • Honey
  • Kali
  • Melody
  • Patch
  • Patches
  • Pixel
  • Pumpkin
  • Rainbow
  • Spice
  • Tortie