"Sable" can be a confusing term. In modern colour genetics it refers to Ay or the most dominant allele of the agouti gene series. In the past it was sometimes used to describe the sparkling varied coats of lappies that subsequently have been classified as 'domino'. It's also possible to confuse Sable with 'Wolfsable' which is one of many words that are used to describe the aw 'wild type' agouti allele. I'm going to stick to the purest genetic use of the word sable here. True Ay sable is genetically dominant and very common in dog breeds generally, but quite uncommon in lappies. Only about 2% of lappies have the Ay sable allele.