The Dominant Spot white pattern mutation occurred in 1964 in the USA. The Dominant Spot pattern turns the belly to pure white and and back leaving only spots or large patches of colouring. The amount of spotting varies immensely with some Dominant Spots having very little white showing on the back whilst others are white on the back with clearly defined small spots of colour.
The Dominant Spot white pattern can be combined with any colour to produce a Dominant variety of that colour.
For the show bench the Dominant Spot should have the appearance of a white hamster with small clear spots of colour evenly spread across the back.