WHWT - Part 2 - history(cont)
In the early 1900's Scottish, West Highland White and Cairn terriers could
come from the same litter and often were interbred. It wasn't until 1917
that the AKC decreed that no Cairn could gain registration if its pedigree
carried a West Highland White Terrier ancestor within the first three
generations. The Kennel Club followed soon after, in 1924, with a decree
that white pups born in litters of Cairns could no longer be registered as
West Highland Whites.
Between 1880 and 1900 there was a tendency to elongate the heads of all the
breeds emanating from the basic 'Scotch' blood. (pictures #10&11)