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Rabbit Color Calculator

Predict rabbit offspring colors based on parent genetics. Use our rabbit color genetics calculator to determine possible fur colors and their probabilities.

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Rabbit Color Genetics Explained

Rabbits come in an astonishing variety of colors and patterns, from classic white and black to chestnut, opal, lynx, and tortoiseshell. The color of a rabbit's fur is determined by the combination of genes inherited from its parents. Our Rabbit Color Calculator uses the five main gene groups responsible for rabbit fur color - A, B, C, D, and E - to predict the possible colors of offspring based on the parents' genetics.

Understanding rabbit color genetics is fascinating and practical for breeders and pet owners alike. The five main gene groups each control a different aspect of color: the A gene determines the pattern (agouti vs. self), the B gene controls the base color (black vs. brown), the C gene affects the amount and placement of color, the D gene controls color density, and the E gene determines the extension of dark pigment.

How to Use the Rabbit Color Calculator

Using the calculator is straightforward. Follow these steps:

  • Select Sire (Male) Genes: Choose the genotype for each of the five gene groups for the father rabbit.
  • Select Dam (Female) Genes: Choose the genotype for each gene group for the mother rabbit.
  • View Results: The calculator shows all possible offspring colors ranked by probability percentage.
  • Customize Display: Use the dropdown to show top 10, top 20, or all possible colors. Toggle "Show count details" for exact combination counts.

For example, if both parents are A_ (agouti), B_ (black), C_ (full color), D_ (full density), and E_ (normal extension), the offspring will most likely be Chestnut (Agouti) at approximately 31.6% probability, with other colors like Opal (Blue Agouti), Black, and Chocolate also possible.

Understanding the Five Main Gene Groups

The five gene groups work together to produce the final rabbit color. Each group has multiple alleles (variants) that interact in predictable ways. The A gene has three variants: A (agouti, dominant), a(t) (tan pattern), and a (self, recessive). The B gene has B (black, dominant) and b (chocolate, recessive). The C gene has the most variants: C (full color), c(chd) (chinchilla), c(chl) (sable), c(h) (himalayan), and c (albino/red-eyed white).

For more complex genetic calculations, you can use our Punnett Square Calculator for single-trait crosses or the Dihybrid Cross Punnett Square for two-trait crosses.

Frequently Asked Questions

What are the five main gene groups for rabbit color?

The five main gene groups are: A (pattern - agouti vs. self), B (base color - black vs. chocolate), C (color expression - full color, chinchilla, sable, himalayan, or albino), D (density - full color vs. diluted), and E (extension - normal vs. non-extension). These five genes interact to produce the vast majority of rabbit coat colors and patterns.

What does the underscore mean in a genotype like "A_"?

In genetics notation, an underscore (A_) means the second allele is unknown but the dominant trait is visible. Since the dominant allele A will always be expressed whether the genotype is AA or Aa, we use A_ to indicate that the rabbit displays the dominant trait but we don't know the exact second allele. This is common when working with visual color identification.

Can rabbits see color?

Yes, but not all colors. Rabbits are dichromats, meaning they can see two primary colors: blue and yellow. Unlike humans who are trichromats (can see red, green, and blue), rabbits cannot see the color red. This is why red objects may appear gray or dark to a rabbit.

What is the difference between agouti and self-colored rabbits?

Agouti rabbits have banded hair shafts, meaning each individual hair has multiple color bands (typically a dark base, lighter middle, and dark tip), creating a natural wild-type appearance. Self-colored rabbits have solid, uniform color on each hair from root to tip. The A gene controls this: A_ produces agouti patterns, while aa produces self (solid) colors.

What is a ruby-eyed white rabbit?

A ruby-eyed white rabbit is an albino rabbit caused by the cc genotype in the C gene group. These rabbits lack pigment in their fur (completely white) and have pink or ruby-colored eyes. The red-eye color comes from blood vessels in the eyes being visible through the transparent iris, which lacks pigment. This is different from blue-eyed white rabbits, which are caused by the Vienna gene (vv).

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