Coat types

Body types


Cream Agouti

Genetics: Agouti plus marten (either double marten or marten plus albino) plus the black eye gene plus two copies of the recessive cream/golden gene.

NFRS Standard: To be a mix of mid grey ticking over a mid cream ground, with no suggestion no suggestion of blue or brown tones. Ticking to be darkest along the […]


Merle rats seemed to disappear in the UK at one point, but imports in 2015/16 brought merle back to the UK fancy. Merle works on the mink gene, and causes uneven distribution of pigments in the coat, causing distinct spots in the coat. This can appear similar to the ‘patchy moults’ which are commonly associated […]

Havana Agouti

Havana agouti is currently a colour shown in New Varieties. There was some debate as to whether or not a standard should be accepted for this colour, as commonly these rats look very similar to a cinnamon. However, with some careful selection, they can be made to look distinctly different.

Genetics: Agouti and mink with […]

Russian Buff

Russian Buff has only recently been accepted for a standard, whereas Russian Topaz (it’s agouti counterpart) has been standardised for much longer. This is because a lot of selection is required in order to get a Russian Buff to look visually distinct from a standard Buff. At this time there are not thought to be […]

Variegated Downunder

This is the third Downunder ‘family’ phenotype to be standardised in the UK. Variegated Downunders are currently shown in the ‘New Varieties’ section at shows. There are still very few breeders in the UK who breed for any of the Downunder types, and currently there doesn’t appear to be anyone breeding specifically for Variegated Downunder. […]