United Rodent CommunityUnited Rodent Community>Disclaimer:
These standards and names are a work in progress. We are constantly trying to better them for the benefit of the community. We understand that AFRMA/NFRS, etc have their own standards. We are an entirely seperate entity and have therefore used standards and names that make sense to us as a group. You are in no way, mean or form required to use these standards.
If you have any suggestions, please feel free to contact Nova on info@calicoexotics.com or Shanleigh on imagine.rattery@gmail.com
We try our best to only use “Good Science™”
| Genotype | History | Show Standard | Points to Remember |
|---|---|---|---|
| aa | This colour variety is very old and is one of the first mutations to be scientifically studied. In the book “Genetics of the Norway rat” it mentions that black was already scientifically described as far back as 1877 (Robinson, 1965). Black was already shown in the very first rat show in the Aylesbury Town Show in 1901 (Royer, 1996) | To be a deep black all over, devoid of rusting and dullness. No silvering preferred, heavy silvering is a disqualifiable fault. Foot and belly colour to match top. Eyes black |
| Genotype | History | Show Standard | Points to Remember |
|---|---|---|---|
| aa bb | Chocolate was first bred in 1915 and was accepted in show standards in 1935 in the UK. In 1976 it was taken over by the NFRS, but withdrawn in 1978. In 1981 Chriss Lown reintroduced the colour and in 1983 it was again accepted in the NFRS standards (Mays, 1997). Chocolate was first scientifically described in 1932 (Robinson, 1965). Chocolate agouti is the agouti based version of the chocolate colour. Most clubs overseas do not recognize chocolate agouti since its colour is close to cinnamon and due to lack of popularity. | To be a rich medium brown all over, devoid of rusting and dullness. No silvering preferred, heavy silvering is a disqualifiable fault. Foot and belly colour to match top. Eyes black. |
| Genotype | History | Show Standard | Points to Remember |
|---|---|---|---|
| aa dd | American Russian blues (from AFRMA) were first bred by Gari Hauser from rats purchased from Karla Barber in 1993 (Royer, 1999). There are many articles in science describing “blue” rat mutations, but it is not certain that they are in fact the same mutation as the Russian blue in fancy rats. Russian blue agoutis are the agouti version of these Russian blues. | To be a steely blue-grey with heathering throughout. Devoid of rusting and dullness. No silvering preferred, heavy silvering is a disqualifiable fault. Foot and belly colour to match top. Eyes black. |
| Genotype | History | Show Standard | Points to Remember |
|---|---|---|---|
| aa gg | Due to the varying shades in all types of g locus blue, we have decided to use one genotype and name to describe them. Previously American Blue and Cape Slate were named separately with different genotypes. |
| Genotype | History | Show Standard | Points to Remember |
|---|---|---|---|
| aa amam |
| Genotype | History | Show Standard | Points to Remember |
|---|---|---|---|
| aa mm |
| Genotype | History | Show Standard | Points to Remember |
|---|---|---|---|
| aa momo |
| Genotype | History | Show Standard | Points to Remember |
|---|---|---|---|
| aa pp |
| Genotype | History | Show Standard | Points to Remember |
|---|---|---|---|
| aa rr |
| Genotype | History | Show Standard | Points to Remember |
|---|---|---|---|
| aa bb dd |
| Genotype | History | Show Standard | Points to Remember |
|---|---|---|---|
| aa bb gg |
| Genotype | History | Show Standard | Points to Remember |
|---|---|---|---|
| aa amam bb |
| Genotype | History | Show Standard | Points to Remember |
|---|---|---|---|
| aa bb mm |
| Genotype | History | Show Standard | Points to Remember |
|---|---|---|---|
| aa bb momo |
| Genotype | History | Show Standard | Points to Remember |
|---|---|---|---|
| aa bb pp |
| Genotype | History | Show Standard | Points to Remember |
|---|---|---|---|
| aa bb rr |
| Genotype | History | Show Standard | Points to Remember |
|---|---|---|---|
| aa dd gg |
| Genotype | History | Show Standard | Points to Remember |
|---|---|---|---|
| aa amam dd |
| Genotype | History | Show Standard | Points to Remember |
|---|---|---|---|
| aa dd mm |
| Genotype | History | Show Standard | Points to Remember |
|---|---|---|---|
| aa dd momo |
| Genotype | History | Show Standard | Points to Remember |
|---|---|---|---|
| aa dd pp |
| Genotype | History | Show Standard | Points to Remember |
|---|---|---|---|
| aa dd rr |
| Genotype | History | Show Standard | Points to Remember |
|---|---|---|---|
| aa amam gg |
| Genotype | History | Show Standard | Points to Remember |
|---|---|---|---|
| aa gg mm |
| Genotype | History | Show Standard | Points to Remember |
|---|---|---|---|
| aa gg momo |
| Genotype | History | Show Standard | Points to Remember |
|---|---|---|---|
| aa gg pp |
| Genotype | History | Show Standard | Points to Remember |
|---|---|---|---|
| aa gg rr |
| Genotype | History | Show Standard | Points to Remember |
|---|---|---|---|
| aa amam Pepe |
| Genotype | History | Show Standard | Points to Remember |
|---|---|---|---|
| aa mm Pepe |
| Genotype | History | Show Standard | Points to Remember |
|---|---|---|---|
| aa momo Pepe |
| Genotype | History | Show Standard | Points to Remember |
|---|---|---|---|
| aa amam pp |
| Genotype | History | Show Standard | Points to Remember |
|---|---|---|---|
| aa mm pp |
| Genotype | History | Show Standard | Points to Remember |
|---|---|---|---|
| aa momo pp |
| Genotype | History | Show Standard | Points to Remember |
|---|---|---|---|
| aa amam rr |
| Genotype | History | Show Standard | Points to Remember |
|---|---|---|---|
| aa mm rr |
| Genotype | History | Show Standard | Points to Remember |
|---|---|---|---|
| aa momo rr |
| Genotype | History | Show Standard | Points to Remember |
|---|---|---|---|
| aa pp rr |
| Genotype | History | Show Standard | Points to Remember |
|---|---|---|---|
| aa bb dd gg |
| Genotype | History | Show Standard | Points to Remember |
|---|---|---|---|
| aa amam bb dd |
| Genotype | History | Show Standard | Points to Remember |
|---|---|---|---|
| aa bb dd mm |
| Genotype | History | Show Standard | Points to Remember |
|---|---|---|---|
| aa bb dd momo |
| Genotype | History | Show Standard | Points to Remember |
|---|---|---|---|
| A- | The agouti colour is the original colour of the Norway rat. In genetics it is referred to as “wild type”, basically meaning that it is the natural colour which is not mutated by any genes. Most wild rats are also agouti in colour except that their coats are duller since domesticated agoutis are selected for a richer coat colour. The first time agouti appeared at a rat show was at Cheltenham, England in 1902, shown by Douglass and Vale (Royer, 1995). | Colour to be a rich chestnut brown with dark grey/black at the base of the hair. Coat to be evenly ticked with black guard hairs. Belly colour to be silver gray. Eye color is black. |
| Genotype | History | Show Standard | Points to Remember |
|---|---|---|---|
| A- bb | Previously unstandardised. Called Chocolate Agouti under all other clubs. | Colour to be a rich pecan brown with dark brown at the base of the hair. Coat to be evenly ticked with dark brown guard hairs. Belly colour to be light silver gray. Eye color is black |
| Genotype | History | Show Standard | Points to Remember |
|---|---|---|---|
| A- dd |
| Genotype | History | Show Standard | Points to Remember |
|---|---|---|---|
| A- gg |
| Genotype | History | Show Standard | Points to Remember |
|---|---|---|---|
| A- amam |
| Genotype | History | Show Standard | Points to Remember |
|---|---|---|---|
| A- mm |
| Genotype | History | Show Standard | Points to Remember |
|---|---|---|---|
| A- momo |
| Genotype | History | Show Standard | Points to Remember |
|---|---|---|---|
| A- pp |
| Genotype | History | Show Standard | Points to Remember |
|---|---|---|---|
| A- rr |
| Genotype | History | Show Standard | Points to Remember |
|---|---|---|---|
| A- bb dd |
| Genotype | History | Show Standard | Points to Remember |
|---|---|---|---|
| A- bb gg |
| Genotype | History | Show Standard | Points to Remember |
|---|---|---|---|
| A- amam bb |
| Genotype | History | Show Standard | Points to Remember |
|---|---|---|---|
| A- bb mm |
| Genotype | History | Show Standard | Points to Remember |
|---|---|---|---|
| A- bb momo |
| Genotype | History | Show Standard | Points to Remember |
|---|---|---|---|
| A- bb pp |
| Genotype | History | Show Standard | Points to Remember |
|---|---|---|---|
| A- bb rr |
| Genotype | History | Show Standard | Points to Remember |
|---|---|---|---|
| A- dd gg |
| Genotype | History | Show Standard | Points to Remember |
|---|---|---|---|
| A- amam dd |
| Genotype | History | Show Standard | Points to Remember |
|---|---|---|---|
| A- dd mm |
| Genotype | History | Show Standard | Points to Remember |
|---|---|---|---|
| A- dd momo |
| Genotype | History | Show Standard | Points to Remember |
|---|---|---|---|
| A- dd pp |
| Genotype | History | Show Standard | Points to Remember |
|---|---|---|---|
| A- dd rr |
| Genotype | History | Show Standard | Points to Remember |
|---|---|---|---|
| A- amam gg |
| Genotype | History | Show Standard | Points to Remember |
|---|---|---|---|
| A- gg mm |
| Genotype | History | Show Standard | Points to Remember |
|---|---|---|---|
| A- gg momo |
| Genotype | History | Show Standard | Points to Remember |
|---|---|---|---|
| A- gg pp |
| Genotype | History | Show Standard | Points to Remember |
|---|---|---|---|
| A- gg rr |
| Genotype | History | Show Standard | Points to Remember |
|---|---|---|---|
| A- amam Pepe |
| Genotype | History | Show Standard | Points to Remember |
|---|---|---|---|
| A- mm Pepe |
| Genotype | History | Show Standard | Points to Remember |
|---|---|---|---|
| A- momo Pepe |
| Genotype | History | Show Standard | Points to Remember |
|---|---|---|---|
| A- amam pp |
| Genotype | History | Show Standard | Points to Remember |
|---|---|---|---|
| A- mm pp |
| Genotype | History | Show Standard | Points to Remember |
|---|---|---|---|
| A- momo pp |
| Genotype | History | Show Standard | Points to Remember |
|---|---|---|---|
| A- amam rr |
| Genotype | History | Show Standard | Points to Remember |
|---|---|---|---|
| A- mm rr |
| Genotype | History | Show Standard | Points to Remember |
|---|---|---|---|
| A- momo rr |
| Genotype | History | Show Standard | Points to Remember |
|---|---|---|---|
| Genotype | History | Show Standard | Points to Remember |
|---|---|---|---|
| Genotype | History | Show Standard | Points to Remember |
|---|---|---|---|
| A- pp rr |
| Genotype | History | Show Standard | Points to Remember |
|---|---|---|---|
| A- bb dd gg |
| Genotype | History | Show Standard | Points to Remember |
|---|---|---|---|
| A- amam bb dd |