My Bunny Farm Bunny Skipping My Bunny Farm Pet Logo    Welcome to

My Bunny Farm

Contact My Bunny Farm Contact Us Pet Rabbit Links Pet Rabbit Breeds


A Summary of Rabbit Color Code Genetics

Information By - Dr. Katrin Becker
An Illustrated Guide to Rabbit Coat Colour Genetics
Visit Dr. Katrin Becker's Web Site, Click Here.

Color Code Summary:

Fundamental Pigments: Black & Yellow (red)

All genes come in pairs. If both genes of a pair are the same,
it is said to be homozygous for that trait.

Genotype refers to the gene itself, while phenotype refers to
what we can see. Sometimes a phenotype will imply a certain
combination of genes but the actual genotype is different.
The best way to discover an animal's genotype is through test
breeding with an animal whose genotype is known.

What gives the Rex its remarkable coat?

Rex rabbits have the same double coat as other rabbits, it's just that their guard hairs are the same length as the undercoat (usually the outer coat is longer). This has several effects:

The outercoat does not hold the undercoat down and the entire pelt appears to stand on end. In fact, a coat that lies flat is a fault in a Rex.
The coat has an amazingly plush feel - these really are velveteen rabbits.
The guard hairs carry the same amount of colour as a regular length hair but they are considerably shorter. This means that the colour of the hair appears more intense. Contrast that with long-coated rabbits like the angora when the same amount of colour is spread out over a MUCH longer hair; these rabbits always appear to have pale colours.

Gene Labels:

There are 5 main groups of color genes, each controlling a different aspect of the color and markings. The genes within each group are listed in decreasing order of dominance. A Capital letter denotes a dominant gene.

PATTERNS [A / at / a ]

Agouti is the basic "wild" color. Hairs on different parts of the body are colored differently, but will have three-five different colored bands on each hair. This pattern looks different on a Rex because of the shorter hairs. The bands are smaller and the colors appear more intense.

A = Agouti ["wild" color; multi-banded hair shaft]

at = Tan [giving tan or "otter" markings]
a = Self [solid color]


B = Black
b = Chocolate


[Controls the amount of pigment in the hair; relative
amounts shown as units of black 'B' and yellow( or red) 'Y' color.
Imagine that the total amount of pigment in hair is the same for
all hairs. As a result, shorter hairs appear darker (and also why
long-haired varieties look faded). This explains the shading pattern found in seals, sables, torts, and the pointed colors.]

C = Normal [BBBBYYY]

cchd = Dark Chinchilla [BBBBY--]
cchl = Light Chinchilla [ shaded : seal & sable] [BB-----]
ch = Himalayan [BB-----]
c = White [Albino : absence of color] [-------]


[Controls the "intensity" of the color:
a diluted black is a blue, and a diluted brown is a lilac]
D = Full Strength


[Controls the presence, and extent of black on tips
of hair and in under color]
Ed = Dominant
Es = Steel
[ not accepted in REX; causes the black on the hair to be extended, often covering the middle band with dark. For a picture of a steel castor, see "Dazzle"]
E = Normal
ej = Japanese
[ not accepted in REX [excpet for tri-color]; responsible for harlequin patterns]
e = Non-Extension [necessary for Red]


(called "broken")
En = Broken Pattern

en = Self [Normal]
{there are others but they are not significant in Rex}

White markings fall into 3 categories:
enen = solid colored; no white
Enen = Broken, usually 10-90% color
EnEn = "Charlie", usually 10% color, typically around the eyes,
ears, and down the center back



Pet Rabbits Care,
Feeding, Etc, Below
Pet Rabbits Fun Stuff and
Color Pages Below
See My Pet Rabbits
Pet Rabbits Pictures Below
General Pet Rabbit Information Pet Rabbit Joke - Will Make You Smile My Pet Rabbits Have A Good Rabbit House
Other Rabbit Breeds See My Pet Rabbits on the Lawn
Rabbit Names
for Your New Bunny
Color Easter and Rabbit Pictures See My Doe Pet Rabbits
How to Care for Pet Rabbits T'was the Day Before Easter See My Baby Bunny Rabbits
Air Quality for Pet Rabbits Easter Little Foo Foo Rabbit Watch Me Grow
Having Bunny Babies Pet Rabbit Trivia See Buck Rabbits at My Bunny Farm
Pet Rabbits Around the World Color Pet Rabbits - Print and Color Baby Rabbits and Easter
Relaxing Your Pet Rabbit The Real Peter Cottontail
~ Sing Along ~
Baby Bunnies and Baby Bunny Pictures
Pet Rabbit's Color Code Friendly Takeover
Pet Rabbit Story
More Baby Bunnies
and Baby Bunny Pictures
Where to Buy Pet Rabbit Supplies Bounder Bunny
Easter Story
My New Pet Rabbit Smiles
What Do Rabbits See? Pet Wabbit In the Wefrigerator  
Pet Rabbit Diseases    
Pet Rabbit  Teeth    
Rabbit Protein Comparison Chart Monster Rabbits
in Glacier National Park

How to cook Um

Rabbit Recipes
American Rabbit Breeders Association
Why Join?


Pet Rabbits Home
Pet Rabbits
My Bunny Farm Home

Comments & Suggestions about Pet Rabbits
Write To Us Here
My Bunny Farm Small Rabbit

Holy Bear Easter BunnyHoly Lambs
- Bunnies for Sale -

Holy Lambs and Bunnies

For you created my inmost being; you knit me together in my mother's womb. I praise you because I am fearfully and wonderfully made; your works are wonderful, I know that full well. Psalm 139: 13-14

Teddy Bears
Also Easter Designs and Bunny Images

Pet rabbits are fun and I love them. After all my years of raising pet rabbits, I still find the New Zealand rabbit breed to be the best at producing meat. Enjoy your baby bunny rabbits.


My Bunny Farm Home
Contact My Bunny Farm | About Us | FAQ
Pet Rabbit Science | Privacy Security Statement
Pet Rabbits - Copyright My Bunny Farm DeerLake Designs L L C My Bunny Farm Logo