What is a PARTI coat?
A Parti coloured dog has a coat that is at least 50% white with patches of any solid colour.
S locus alleles (or MITF gene) determine the degree and distribution of spotting. Parti dogs have a MITF gene that causes large patches with no colour.
A tri-coloured pup is a parti (black & white or chocolate & white) dog that also has tan coloured phantom markings on the eyebrows, muzzle, lower legs and beneath the tail.