Cats
white particolour gene and a white mitted gene.
A pattern which has only rarely been reported in cats is the belt, blanket or sheet marking.
This is common in pigs and cattle and in Dutch rabbits where a band of white encircles the
animal's body like a belt.
Another cause of white spotting is a somatic mutation i.e. some skin cells have a chance
mutation which prevents them from producing pigment. This is not hereditary.
Leukoderma ("white skin"), leukotrichia ("white hair") or vitiligo, is a cosmetic condition
that produces a "cobweb" or "snowflake" effect and is most easily seen on black cats. White
spots appear on the coat; these become more extensive with age until the cat has a white lace
pattern on the black fur. Ultimately the cat may go completely white or be left with
diminishing isolated patches of colour. This condition has been seen in black leopards
("cobweb panthers"), humans, dogs and other animals. This must not be confused with the
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