What is the name of the black‑and‑white rat breed? - briefly
The black‑and‑white coloration in fancy rats is called the Dutch variety, often referred to as a piebald pattern.
What is the name of the black‑and‑white rat breed? - in detail
The breed commonly referred to as the black‑and‑white rat is officially known as the Bicolor (sometimes marketed as “Panda” or “Harlequin”). It belongs to the fancy‑rat category, derived from the domesticated species Rattus norvegicus.
The Bicolor’s distinctive appearance results from a recessive gene that produces a stark contrast between a solid black torso and a white facial mask, paws, and tail tip. The coat may be smooth or exhibit the Rex texture, depending on additional genetic modifiers.
Key characteristics:
- Genetics – The colour pattern follows Mendelian inheritance; two copies of the bicolor allele are required for expression. Breeding a Bicolor with a solid‑coloured rat yields carriers that appear normal but can produce Bicolors when paired appropriately.
- Physical traits – Medium‑sized body (250–350 g), compact musculature, glossy fur. Eye colour is typically dark, though some lines display pink‑hued irises when the white pigment extends to the iris.
- Temperament – Generally calm and sociable, similar to other fancy‑rat strains. They respond well to handling and can be trained for simple tricks.
- Care requirements – Standard rat husbandry applies: a spacious cage, deep bedding, regular enrichment, and a balanced diet of commercial pellets supplemented with fresh vegetables. The white fur may be more prone to staining, so cage hygiene should be maintained rigorously.
Because the Bicolor is a true breed rather than a temporary colour morph, reputable breeders maintain detailed lineage records to preserve the integrity of the black‑and‑white pattern. Prospective owners should seek breeders who provide health certificates and guarantee the presence of the bicolor genotype.