Non-Extension (ee)

Agouti Non-Extension (A- ee) - Red & Fawn

Only the Red is recognized in North America. It makes use of the recessive ee non-extension gene. It is the only rex color to make use of the recessive Wide Band gene (W) which fills the entire hair shaft with the mid band color. Genetically speaking, the difference between a Red and a Tort is that the Red has the Agouti pattern, while the tort is a self. The tort will always show darker points and belly color, and can usually be identified at birth.

An Agouti (A-) rabbit with non-extension (ee) but without the wide band (ww) will look more like a red or fawn than a tort, but will have lighter than ideal markings around the eyes, and on the belly. Ideally, these should carry the color right to the skin, with NO difference in the belly colors. Since the midband is carried right to the tips, there should be no noticeable difference between the black and chocolate; or the blue and lilac.

Fawn (Lilac) Fawn (Lilac) Lynx Lynx vs Fawn (Lilac)
lilac-tort-2010-07-21_11-40-25.jpg lilac-tort-2010-07-21_11-38-58.jpg
These two are sisters. The difference is noticeable at birth - the fawn lacks the pattern markings typical of an agouti, and the tipping is absent when the hair first starts to come in (the lynx looks like a lilac agouti while the fawn looks like a self).

in Rex, there is some disagreement over the correct genotype for the Lynx variety: some people say it should be a genetic lilac agouti, while others say it should be a Fawn.

Agouti Patterns This is the “natural” (wild) color pattern.
Color A B C D E En
Red A- B- C- D- ee enen
Red A- bb C- D- ee enen
Fawn A- B- C- dd ee enen Not recognized in Rex.
Fawn A- bb C- dd ee enen Not recognized in Rex.

Otter (tan) Non-Extension (at ee)

The non-extension tan (otter) will show both some tort shading *and* the typical tan markings (light surface color underneath, with a red border between the body color and the belly, around the eyes, inside and behind the ears)

Tan Patterns Fox
Color A B C D E En
Black (Red) Fox at- B- C- D- ee enen
Chocolate Fox at- bb C- D- ee enen
Blue Fox at- B- C- dd ee enen
Lilac Fox at- bb C- dd ee enen
This image shows a fox and her red sister.

Self Non-Extension: Tort (aa ee)

These all have dark points (nose, ears, feet,…) and a lighter body. None of these are recognized in Rex. All carry the self pattern (aa). None are recognized in Rex.

The Selfs (solid color) Tortoiseshell
Color A B C D E En
Black Tort aa B- C- D- ee enen
Chocolate Tort aa bb C- D- ee enen
Blue Tort aa B- C- dd ee enen
Lilac Tort aa bb C- dd ee enen
Black Tort

Chinchilla: Ermine

NOT A RECOGNIZED COLOR IN REX

This is the color you get when you combine the shaded gene (cchd or cchl) with non-extension (ee). The animal will look white but if you compare it against a true albino (rew) you will see that the eye has color (albinos have NO color so all you see is the pink from the blood vessels in the eye) and that there is a slight ticking on the coat. The color of the eye and ticking will provide a clue as to whether or not it is black, blue, chocolate, or lilac, although it is difficult to distinguish black from chocolate and blue from lilac as so much of the color is removed by the shading gene.

Ermine Red-Eyed White (albino)

The second Shading Gene can be cchd, cchl, ch, or c, but not C, and c gives the best ermine effect.

Self Chinchilla: Sallander

NOT A RECOGNIZED COLOR IN REX

This is the color you get when you combine the dark chinchilla gene (cchd) with a tort (aa ee). You get the same kind of patterns as you would with a tort, but of course the cchd chinchilla gets rid of most of the yellow (red).

Sallander (broken) Tort

The second Shading Gene can be cchd, cchl, ch, or c, but not C