DOMESTIC VARIETY
Ancestry: Rattus norvegicus 
Double Rex
Coat Type
Results from two Rex genes. These rats appear patchy, with areas of fuzz and bare skin that change over time (molting).
Variety Type
Coat Type
Key Traits
Patchy hair
Curly whiskers
Partial hairlessness
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Genetic Origin
All domestic rats are descended from the Brown Rat (Rattus norvegicus). Selective breeding has created these unique variations in coat, ears, and size.